diff --git a/reactos/base/shell/progman/progman.h b/reactos/base/shell/progman/progman.h
index 337b5e0b7db..690801d7357 100644
--- a/reactos/base/shell/progman/progman.h
+++ b/reactos/base/shell/progman/progman.h
@@ -32,8 +32,6 @@
 #ifndef PROGMAN_H
 #define PROGMAN_H
 
-#pragma once
-
 #include <stdio.h>
 #include <stdlib.h>