diff --git a/api/boinc_api.C b/api/boinc_api.C
index 91af3a03bc..f6f98de28b 100644
--- a/api/boinc_api.C
+++ b/api/boinc_api.C
@@ -17,8 +17,6 @@
 // Contributor(s):
 //
 
-#include "windows_cpp.h"
-
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>