diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index 5b2186feb8c707..aec97f15e2c809 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -497,6 +497,7 @@ MaybeLocal<Object> New(Environment* env,
     if (length > kMaxLength) {
       Isolate* isolate(env->isolate());
       isolate->ThrowException(ERR_BUFFER_TOO_LARGE(isolate));
+      free(data);
       return Local<Object>();
     }
   }