diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index b99d4f426f..646dc60aef 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -68,8 +68,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/configurator/config/Configuration.h b/Marlin/configurator/config/Configuration.h
index 3fad145275..57f37756b3 100644
--- a/Marlin/configurator/config/Configuration.h
+++ b/Marlin/configurator/config/Configuration.h
@@ -68,8 +68,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/configurator/config/language.h b/Marlin/configurator/config/language.h
index 3fe7afd2ed..5d1fd6c2fb 100644
--- a/Marlin/configurator/config/language.h
+++ b/Marlin/configurator/config/language.h
@@ -75,7 +75,7 @@
 #endif
 
 #ifdef CUSTOM_MENDEL_NAME
-  #warning CUSTOM_MENDEL_NAME deprecated - use CUSTOM_MACHINE_NAME
+  #error CUSTOM_MENDEL_NAME deprecated - use CUSTOM_MACHINE_NAME
   #define CUSTOM_MACHINE_NAME CUSTOM_MENDEL_NAME
 #endif
 
diff --git a/Marlin/configurator/index.html b/Marlin/configurator/index.html
index 9fa40a105d..54353913d2 100644
--- a/Marlin/configurator/index.html
+++ b/Marlin/configurator/index.html
@@ -46,7 +46,7 @@
 
           <label class="newline">Motherboard:</label><select name="MOTHERBOARD"></select>
 
-          <label class="newline">Custom Name:</label><input name="CUSTOM_MENDEL_NAME" type="text" size="14" maxlength="12" value="" />
+          <label class="newline">Custom Name:</label><input name="CUSTOM_MACHINE_NAME" type="text" size="14" maxlength="12" value="" />
 
           <label class="newline">Machine UUID:</label><input name="MACHINE_UUID" type="text" size="38" maxlength="36" value="" />
 
diff --git a/Marlin/example_configurations/Felix/Configuration.h b/Marlin/example_configurations/Felix/Configuration.h
index 1efcad88c7..269b8b794e 100644
--- a/Marlin/example_configurations/Felix/Configuration.h
+++ b/Marlin/example_configurations/Felix/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_FELIX2
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+#define CUSTOM_MACHINE_NAME "Felix"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/Felix/Configuration_DUAL.h b/Marlin/example_configurations/Felix/Configuration_DUAL.h
index dd5c371c08..49b9f5b0b7 100644
--- a/Marlin/example_configurations/Felix/Configuration_DUAL.h
+++ b/Marlin/example_configurations/Felix/Configuration_DUAL.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_FELIX2
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+#define CUSTOM_MACHINE_NAME "Felix Dual"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/Hephestos/Configuration.h b/Marlin/example_configurations/Hephestos/Configuration.h
index 2a331c9ece..e399ed8996 100644
--- a/Marlin/example_configurations/Hephestos/Configuration.h
+++ b/Marlin/example_configurations/Hephestos/Configuration.h
@@ -62,8 +62,8 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_HEPHESTOS
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/K8200/Configuration.h b/Marlin/example_configurations/K8200/Configuration.h
index 5adab57f5b..60e2db873c 100644
--- a/Marlin/example_configurations/K8200/Configuration.h
+++ b/Marlin/example_configurations/K8200/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_K8200
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/SCARA/Configuration.h b/Marlin/example_configurations/SCARA/Configuration.h
index c0032d4bbc..65fccb063d 100644
--- a/Marlin/example_configurations/SCARA/Configuration.h
+++ b/Marlin/example_configurations/SCARA/Configuration.h
@@ -80,8 +80,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/WITBOX/Configuration.h b/Marlin/example_configurations/WITBOX/Configuration.h
index 757c1628ef..293aa77169 100644
--- a/Marlin/example_configurations/WITBOX/Configuration.h
+++ b/Marlin/example_configurations/WITBOX/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_WITBOX
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/delta/generic/Configuration.h b/Marlin/example_configurations/delta/generic/Configuration.h
index f1760f59e7..2562010ea7 100644
--- a/Marlin/example_configurations/delta/generic/Configuration.h
+++ b/Marlin/example_configurations/delta/generic/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+#define CUSTOM_MACHINE_NAME "Deltabot"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration.h b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
index 990c4e7628..1c6313e938 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_RAMPS_13_EFB
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-#define CUSTOM_MENDEL_NAME "Mini Kossel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+#define CUSTOM_MACHINE_NAME "Mini Kossel"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/makibox/Configuration.h b/Marlin/example_configurations/makibox/Configuration.h
index 1eea3186cf..e355a41ea5 100644
--- a/Marlin/example_configurations/makibox/Configuration.h
+++ b/Marlin/example_configurations/makibox/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_5DPRINT
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration.h b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
index 8a3c3a8546..06cd2ae475 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration.h
@@ -62,8 +62,9 @@ Here are some standard links for getting your machine calibrated:
   #define MOTHERBOARD BOARD_OMCA
 #endif
 
-// Define this to set a custom name for your generic Mendel,
-// #define CUSTOM_MENDEL_NAME "This Mendel"
+// Optional custom name for your RepStrap or other custom machine
+// Displayed in the LCD "Ready" message
+// #define CUSTOM_MACHINE_NAME "This RepRap"
 
 // Define this to set a unique identifier for this printer, (Used by some programs to differentiate between machines)
 // You can use an online service to generate a random UUID. (eg http://www.uuidgenerator.net/version4)
diff --git a/Marlin/language.h b/Marlin/language.h
index 3fe7afd2ed..5d1fd6c2fb 100644
--- a/Marlin/language.h
+++ b/Marlin/language.h
@@ -75,7 +75,7 @@
 #endif
 
 #ifdef CUSTOM_MENDEL_NAME
-  #warning CUSTOM_MENDEL_NAME deprecated - use CUSTOM_MACHINE_NAME
+  #error CUSTOM_MENDEL_NAME deprecated - use CUSTOM_MACHINE_NAME
   #define CUSTOM_MACHINE_NAME CUSTOM_MENDEL_NAME
 #endif