diff --git a/Marlin/src/feature/probe_temp_comp.h b/Marlin/src/feature/probe_temp_comp.h
index 2eeb7f47ec..2e5ae85a43 100644
--- a/Marlin/src/feature/probe_temp_comp.h
+++ b/Marlin/src/feature/probe_temp_comp.h
@@ -64,7 +64,7 @@ typedef struct {
 #ifndef BTC_SAMPLE_COUNT
   #define BTC_SAMPLE_COUNT 10U
 #endif
-#ifndef BTC_SAMPLE_STEP
+#ifndef BTC_SAMPLE_RES
   #define BTC_SAMPLE_RES 5
 #endif
 #ifndef BTC_SAMPLE_START