diff --git a/runtime/jit/jit_code_cache.h b/runtime/jit/jit_code_cache.h
index 9683b48..8a9c010 100644
--- a/runtime/jit/jit_code_cache.h
+++ b/runtime/jit/jit_code_cache.h
@@ -74,7 +74,9 @@
 
 class MarkCodeClosure;
 
-using CodeCacheBitmap = gc::accounting::MemoryRangeBitmap<kJitCodeAlignment>;
+// Type of bitmap used for tracking live functions in the JIT code cache for the purposes
+// of garbage collecting code.
+using CodeCacheBitmap = gc::accounting::MemoryRangeBitmap<kJitCodeAccountingBytes>;
 
 class JitCodeCache {
  public: