diff --git a/reactos/subsystems/win32/win32k/include/rect.h b/reactos/subsystems/win32/win32k/include/rect.h
index b189b76a721..a0687243ab4 100644
--- a/reactos/subsystems/win32/win32k/include/rect.h
+++ b/reactos/subsystems/win32/win32k/include/rect.h
@@ -54,7 +54,9 @@ BOOL
 FASTCALL
 RECTL_bIntersectRect(RECTL *prclDst, const RECTL *prcl1, const RECTL *prcl2);
 
-
+VOID
+FASTCALL
+RECTL_vMakeWellOrdered(RECTL *prcl);
 
 
 #endif /* _WIN32K_RECT_H */
diff --git a/reactos/subsystems/win32/win32k/objects/rect.c b/reactos/subsystems/win32/win32k/objects/rect.c
index 35ad5f63502..693377cf3bb 100644
--- a/reactos/subsystems/win32/win32k/objects/rect.c
+++ b/reactos/subsystems/win32/win32k/objects/rect.c
@@ -83,6 +83,24 @@ RECTL_bIntersectRect(RECTL* prclDst, const RECTL* prcl1, const RECTL* prcl2)
     return FALSE;
 }
 
+VOID
+FASTCALL
+RECTL_vMakeWellOrdered(RECTL *prcl)
+{
+    LONG lTmp;
+    if (prcl->left > prcl->right)
+    {
+        lTmp = prcl->left;
+        prcl->left = prcl->right;
+        prcl->right = lTmp;       
+    }
+    if (prcl->top > prcl->bottom)
+    {
+        lTmp = prcl->top;
+        prcl->top = prcl->bottom;
+        prcl->bottom = lTmp;       
+    }
+}
 
 
 /* EOF */