diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 04800889..d8133f84 100755
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -1661,7 +1661,7 @@
 //
 // G2/G3 Arc Support
 //
-//#define ARC_SUPPORT                 // Disable this feature to save ~3226 bytes
+#define ARC_SUPPORT                 // Disable this feature to save ~3226 bytes
 #if ENABLED(ARC_SUPPORT)
   #define MM_PER_ARC_SEGMENT      1 // (mm) Length (or minimum length) of each arc segment
   //#define ARC_SEGMENTS_PER_R    1 // Max segment length, MM_PER = Min