diff --git a/src/unity_internals.h b/src/unity_internals.h
index 9c0d4ee..351d9fe 100644
--- a/src/unity_internals.h
+++ b/src/unity_internals.h
@@ -307,7 +307,7 @@ typedef UNITY_FLOAT_TYPE UNITY_FLOAT;
 #endif
 #endif
 
-#ifndef UNITY_EXEC_TIME_START
+#ifndef UNITY_EXEC_TIME_STOP
 #ifdef UNITY_INCLUDE_EXEC_TIME
 #define UNITY_EXEC_TIME_STOP() Unity.CurrentTestStopTime = UNITY_CLOCK_MS();
 #else