diff --git a/src/allocation.cc b/src/allocation.cc
index cae1c10..96fd71f 100644
--- a/src/allocation.cc
+++ b/src/allocation.cc
@@ -85,7 +85,7 @@
 
 void* AlignedAlloc(size_t size, size_t alignment) {
   DCHECK_LE(V8_ALIGNOF(void*), alignment);
-  DCHECK(base::bits::IsPowerOfTwo32(alignment));
+  DCHECK(base::bits::IsPowerOfTwo64(alignment));
   void* ptr;
 #if V8_OS_WIN
   ptr = _aligned_malloc(size, alignment);