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-rw-r--r--dix/window.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/dix/window.c b/dix/window.c
index d43ef0370..9019852dd 100644
--- a/dix/window.c
+++ b/dix/window.c
@@ -3243,7 +3243,7 @@ CheckWindowOptionalNeed(WindowPtr w)
return;
if (optional->userProps != NULL)
return;
- if (optional->backingBitPlanes != ~0L)
+ if (optional->backingBitPlanes != (CARD32)~0L)
return;
if (optional->backingPixel != 0)
return;