diff --git a/tools/lib/traceevent/kbuffer-parse.c b/tools/lib/traceevent/kbuffer-parse.c
index c94e3641b046638d26164f29dba01cee67fa2f56..ca424b157e4653a009a078604a217bf3853a8ed8 100644
--- a/tools/lib/traceevent/kbuffer-parse.c
+++ b/tools/lib/traceevent/kbuffer-parse.c
@@ -24,8 +24,8 @@
 
 #include "kbuffer.h"
 
-#define MISSING_EVENTS (1 << 31)
-#define MISSING_STORED (1 << 30)
+#define MISSING_EVENTS (1UL << 31)
+#define MISSING_STORED (1UL << 30)
 
 #define COMMIT_MASK ((1 << 27) - 1)