diff --git a/rosapps/tests/mutex/mutex.c b/rosapps/tests/mutex/mutex.c
index 0597d274af8..c6d6afddad1 100644
--- a/rosapps/tests/mutex/mutex.c
+++ b/rosapps/tests/mutex/mutex.c
@@ -1,4 +1,3 @@
-#include <ddk/ntddk.h>
 #include <windows.h>
 #include <string.h>
 #include <stdio.h>