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-rw-r--r--win/tkWinButton.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/win/tkWinButton.c b/win/tkWinButton.c
index c36932d..b0de785 100644
--- a/win/tkWinButton.c
+++ b/win/tkWinButton.c
@@ -434,7 +434,7 @@ TkpDisplayButton(
* Display image or bitmap or text for button.
*/
- if (butPtr->image != None) {
+ if (butPtr->image != NULL) {
Tk_SizeOfImage(butPtr->image, &width, &height);
haveImage = 1;
} else if (butPtr->bitmap != None) {