1 files changed, 1 insertions, 1 deletions

diff --git a/XI2.h b/XI2.h
index 1ec2d44..7fc76f0 100644
--- a/XI2.h
+++ b/XI2.h
@@ -57,7 +57,7 @@
 #define XIGrabtypeFocusIn                       3
 
 /* Passive grab modifier */
-#define XIAnyModifier                           (1 << 31)
+#define XIAnyModifier                           (1U << 31)
 #define XIAnyButton                             0
 #define XIAnyKeysym                             0