diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index 2ae4f4e399..c9a29b351c 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -2622,6 +2622,10 @@
   #endif
 #endif
 
+#if BUTTONS_EXIST(EN1, EN2, ENC)
+  #define HAS_ROTARY_ENCODER 1
+#endif
+
 #if !NUM_SERIAL
   #undef BAUD_RATE_GCODE
 #elif NUM_SERIAL > 1