diff --git a/dlls/ddraw/dsurface/dib.c b/dlls/ddraw/dsurface/dib.c
index 079cdfa4044..c0eafd44f55 100644
--- a/dlls/ddraw/dsurface/dib.c
+++ b/dlls/ddraw/dsurface/dib.c
@@ -514,11 +514,9 @@ DIB_DirectDrawSurface_Blt(LPDIRECTDRAWSURFACE7 iface, LPRECT rdst,
 	}
     }
 
-    if (src != NULL) {
-        if (This->locked || ((IDirectDrawSurfaceImpl *)src)->locked) {
-            WARN(" Surface is busy, returning DDERR_SURFACEBUSY\n");
-            return DDERR_SURFACEBUSY;
-        }
+    if ((This->locked) || ((src != NULL) && (((IDirectDrawSurfaceImpl *)src)->locked))) {
+        WARN(" Surface is busy, returning DDERR_SURFACEBUSY\n");
+        return DDERR_SURFACEBUSY;
     }
 
     /* First, check if the possible override function handles this case */
@@ -992,11 +990,9 @@ DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
 	  TRACE(" srcrect: NULL\n");
     }
 
-    if (src != NULL) {
-        if (This->locked || ((IDirectDrawSurfaceImpl *)src)->locked) {
-            WARN(" Surface is busy, returning DDERR_SURFACEBUSY\n");
-            return DDERR_SURFACEBUSY;
-        }
+    if ((This->locked) || ((src != NULL) && (((IDirectDrawSurfaceImpl *)src)->locked))) {
+        WARN(" Surface is busy, returning DDERR_SURFACEBUSY\n");
+        return DDERR_SURFACEBUSY;
     }
 
     /* First, check if the possible override function handles this case */