diff --git a/src/node_api.cc b/src/node_api.cc
index a8fd789955384a..6e9f9bbc07e176 100644
--- a/src/node_api.cc
+++ b/src/node_api.cc
@@ -12,7 +12,6 @@
 #include <node_object_wrap.h>
 #include <string.h>
 #include <algorithm>
-#include <cassert>
 #include <cmath>
 #include <vector>
 #include "uv.h"
@@ -852,7 +851,7 @@ napi_status napi_get_last_error_info(napi_env env,
   static_assert(
       node::arraysize(error_messages) == napi_escape_called_twice + 1,
       "Count of error messages must match count of error values");
-  assert(env->last_error.error_code <= napi_escape_called_twice);
+  CHECK_LE(env->last_error.error_code, napi_escape_called_twice);
 
   // Wait until someone requests the last error information to fetch the error
   // message string
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 9f4ab846cb8b15..61ab265ce193b4 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -2699,18 +2699,6 @@ int Connection::HandleSSLError(const char* func,
 }
 
 
-void Connection::ClearError() {
-#ifndef NDEBUG
-  HandleScope scope(ssl_env()->isolate());
-
-  // We should clear the error in JS-land
-  Local<String> error_key = ssl_env()->error_string();
-  Local<Value> error = object()->Get(error_key);
-  CHECK_EQ(error->BooleanValue(), false);
-#endif  // NDEBUG
-}
-
-
 void Connection::SetShutdownFlags() {
   HandleScope scope(ssl_env()->isolate());
 
diff --git a/src/node_crypto.h b/src/node_crypto.h
index b406fb8aa6867d..3abfe973a79ebd 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -390,7 +390,6 @@ class Connection : public AsyncWrap, public SSLWrap<Connection> {
 
   int HandleSSLError(const char* func, int rv, ZeroStatus zs, SyscallStatus ss);
 
-  void ClearError();
   void SetShutdownFlags();
 
   Connection(Environment* env,