diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index dcccdd88a1..303acd5a39 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -1354,7 +1354,7 @@
 #define USR_Z_DIR false
 #endif
 
-#ifdef FB_5_STOCK_
+#ifdef FB_5_STOCK
 #define USR_E0_DIR false
 #define USR_X_DIR false
 #define USR_Y_DIR false