diff --git a/src/util/u_thread.h b/src/util/u_thread.h
index b5c7667d3d0..57ebdc51ba1 100644
--- a/src/util/u_thread.h
+++ b/src/util/u_thread.h
@@ -109,7 +109,7 @@ util_current_thread_get_time_nano(void)
 
 static inline bool u_thread_is_self(thrd_t thread)
 {
-   return thrd_equal(thrd_current(), thread);
+   return thrd_equal(thrd_current(), thread) != 0;
 }
 
 /*