diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index b151e33405..f7db9d7373 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -142,7 +142,7 @@
 #define EXTRUDERS 1
 
 // Generally expected filament diameter (1.75, 2.85, 3.0, ...). Used for Volumetric, Filament Width Sensor, etc.
-#define DEFAULT_NOMINAL_FILAMENT_DIA 3.0
+#define DEFAULT_NOMINAL_FILAMENT_DIA 1.75
 
 // For Cyclops or any "multi-extruder" that shares a single nozzle.
 //#define SINGLENOZZLE