diff --git a/src/workerd/api/node/zlib-util.c++ b/src/workerd/api/node/zlib-util.c++
index 3fbb9c4f842..b8131d73dda 100644
--- a/src/workerd/api/node/zlib-util.c++
+++ b/src/workerd/api/node/zlib-util.c++
@@ -7,16 +7,9 @@
 
 namespace workerd::api::node {
 
-namespace {
-// This function is required to avoid function name clash.
-uint32_t crc32Impl(uint32_t value, unsigned char* bytes, size_t size) {
+uint32_t ZlibUtil::crc32Sync(kj::Array<kj::byte> data, uint32_t value) {
   // Note: Bytef is defined in zlib.h
-  return crc32(value, reinterpret_cast<const Bytef*>(bytes), size);
-}
-} // namespace
-
-uint32_t ZlibUtil::crc32(kj::Array<kj::byte> data, uint32_t value) {
-  return crc32Impl(value, data.begin(), data.size());
+  return crc32(value, reinterpret_cast<const Bytef*>(data.begin()), data.size());
 }
 
 } // namespace workerd::api::node
diff --git a/src/workerd/api/node/zlib-util.h b/src/workerd/api/node/zlib-util.h
index 75828fb1786..44b9fe7ef41 100644
--- a/src/workerd/api/node/zlib-util.h
+++ b/src/workerd/api/node/zlib-util.h
@@ -12,10 +12,10 @@ class ZlibUtil final : public jsg::Object {
   ZlibUtil() = default;
   ZlibUtil(jsg::Lock&, const jsg::Url&) {}
 
-  uint32_t crc32(kj::Array<kj::byte> data, uint32_t value);
+  uint32_t crc32Sync(kj::Array<kj::byte> data, uint32_t value);
 
   JSG_RESOURCE_TYPE(ZlibUtil) {
-    JSG_METHOD(crc32);
+    JSG_METHOD_NAMED(crc32, crc32Sync);
   }
 };