diff --git a/src/video/os2/my_gradd.h b/src/video/os2/SDL_gradd.h
similarity index 99%
rename from src/video/os2/my_gradd.h
rename to src/video/os2/SDL_gradd.h
index 3f0f3265d..a1369a260 100644
--- a/src/video/os2/my_gradd.h
+++ b/src/video/os2/SDL_gradd.h
@@ -5,8 +5,8 @@ Based on public knowledge from around the internet including pages from
 http://www.osfree.org and http://www.edm2.com
 */
 
-#ifndef my_gradd_h_
-#define my_gradd_h_
+#ifndef SDL_gradd_h_
+#define SDL_gradd_h_
 
 typedef struct _INITPROCOUT {
   ULONG     ulLength;         /*  Length of the INITPROCOUT data structure, in bytes. */
@@ -168,4 +168,4 @@ LONG GreResurrection(HDC hdc, LONG cbVmem, PULONG pReserved, PVOID pInstance, LO
 ULONG _System Gre32Entry3(ULONG, ULONG, ULONG);
 ULONG _System Gre32Entry5(ULONG, ULONG, ULONG, ULONG, ULONG);
 
-#endif /* my_gradd_h_ */
+#endif /* SDL_gradd_h_ */
diff --git a/src/video/os2/SDL_os2vman.c b/src/video/os2/SDL_os2vman.c
index 56d231562..986b9e1bd 100644
--- a/src/video/os2/SDL_os2vman.c
+++ b/src/video/os2/SDL_os2vman.c
@@ -31,7 +31,7 @@
 #include "SDL_os2output.h"
 #include "SDL_os2video.h"
 
-#include "my_gradd.h"
+#include "SDL_gradd.h"
 
 typedef struct _VODATA {
   PVOID    pBuffer;