diff --git a/runtime/gc/allocator/rosalloc.cc b/runtime/gc/allocator/rosalloc.cc
index 804c98a..fa531a7 100644
--- a/runtime/gc/allocator/rosalloc.cc
+++ b/runtime/gc/allocator/rosalloc.cc
@@ -1144,7 +1144,7 @@
 
 size_t RosAlloc::BulkFree(Thread* self, void** ptrs, size_t num_ptrs) {
   size_t freed_bytes = 0;
-  if (false) {
+  if ((false)) {
     // Used only to test Free() as GC uses only BulkFree().
     for (size_t i = 0; i < num_ptrs; ++i) {
       freed_bytes += FreeInternal(self, ptrs[i]);