diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index adb1e90690d..20ad96ae874 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -2846,6 +2846,7 @@ void CipherBase::Final(const FunctionCallbackInfo<Value>& args) {
 
   args.GetReturnValue().Set(
       Buffer::New(env, reinterpret_cast<char*>(out_value), out_len));
+  delete[] out_value;
 }