diff --git a/Marlin/src/gcode/motion/M290.cpp b/Marlin/src/gcode/motion/M290.cpp
index 31411a0698..2333e1ac0b 100644
--- a/Marlin/src/gcode/motion/M290.cpp
+++ b/Marlin/src/gcode/motion/M290.cpp
@@ -130,7 +130,7 @@ void GcodeSuite::M290() {
           , SP_Y_STR, babystep.axis_total[Y_AXIS]
           , SP_Z_STR
         #else
-          , PSTR("Babystep Z")
+          PSTR("Babystep Z")
         #endif
         , babystep.axis_total[BS_TODO_AXIS(Z_AXIS)]
       );
diff --git a/Marlin/src/libs/vector_3.cpp b/Marlin/src/libs/vector_3.cpp
index 53057906cd..c2bb347dac 100644
--- a/Marlin/src/libs/vector_3.cpp
+++ b/Marlin/src/libs/vector_3.cpp
@@ -76,6 +76,8 @@ void vector_3::apply_rotation(const matrix_3x3 &matrix) {
             matrix.vectors[0][2] * _x + matrix.vectors[1][2] * _y + matrix.vectors[2][2] * _z };
 }
 
+extern const char SP_X_STR[], SP_Y_STR[], SP_Z_STR[];
+
 void vector_3::debug(PGM_P const title) {
   serialprintPGM(title);
   SERIAL_ECHOPAIR_F_P(SP_X_STR, x, 6);
diff --git a/Marlin/src/pins/stm32/pins_JGAURORA_A5S_A1.h b/Marlin/src/pins/stm32/pins_JGAURORA_A5S_A1.h
index 51c1e8f79a..d0e082dbd0 100644
--- a/Marlin/src/pins/stm32/pins_JGAURORA_A5S_A1.h
+++ b/Marlin/src/pins/stm32/pins_JGAURORA_A5S_A1.h
@@ -35,7 +35,10 @@
 #endif
 #define BOARD_INFO_NAME "JGAurora A5S A1 board"
 
-#define STM32_XL_DENSITY
+#ifndef STM32_XL_DENSITY
+  #define STM32_XL_DENSITY
+#endif
+
 // #define MCU_STM32F103ZE // not yet required
 // Enable EEPROM Emulation for this board, so that we don't overwrite factory data