diff --git a/src/node_file.cc b/src/node_file.cc
index a2fb9e0b4614d4..f1374634307cfe 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -2534,6 +2534,9 @@ void Initialize(Local<Object> target,
               use_promises_symbol).Check();
 }
 
+BindingData* FSReqBase::binding_data() {
+  return binding_data_.get();
+}
 }  // namespace fs
 
 }  // end namespace node
diff --git a/src/node_file.h b/src/node_file.h
index 2b157de5eb485d..95a68b5d89a704 100644
--- a/src/node_file.h
+++ b/src/node_file.h
@@ -109,7 +109,7 @@ class FSReqBase : public ReqWrap<uv_fs_t> {
 
   void MemoryInfo(MemoryTracker* tracker) const override;
 
-  BindingData* binding_data() { return binding_data_.get(); }
+  BindingData* binding_data();
 
  private:
   std::unique_ptr<FSContinuationData> continuation_data_;