1 files changed, 1 insertions, 1 deletions
diff --git a/libc/malloc_debug/tests/malloc_debug_system_tests.cpp b/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
index 9d33189e9..b20cef77b 100644
--- a/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
+++ b/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
@@ -463,7 +463,7 @@ TEST(MallocTests, DISABLED_exit_while_threads_allocating) {
           exit(1000);
         }
         free(ptr);
-        thread_mask.fetch_or(1 << i);
+        thread_mask.fetch_or(1U << i);
       }
     });
     malloc_thread.detach();