diff --git a/reactos/base/shell/progman/progman.h b/reactos/base/shell/progman/progman.h
index 582a1ba849d..c753c1fb601 100644
--- a/reactos/base/shell/progman/progman.h
+++ b/reactos/base/shell/progman/progman.h
@@ -22,8 +22,6 @@
 #ifndef PROGMAN_H
 #define PROGMAN_H
 
-#pragma once
-
 #include <stdio.h>
 #include <string.h>