diff --git a/src/node_credentials.cc b/src/node_credentials.cc
index 765d1caba94666..c8685ac488717f 100644
--- a/src/node_credentials.cc
+++ b/src/node_credentials.cc
@@ -172,21 +172,29 @@ static gid_t gid_by_name(Isolate* isolate, Local<Value> value) {
 }
 
 static void GetUid(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   // uid_t is an uint32_t on all supported platforms.
   args.GetReturnValue().Set(static_cast<uint32_t>(getuid()));
 }
 
 static void GetGid(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   // gid_t is an uint32_t on all supported platforms.
   args.GetReturnValue().Set(static_cast<uint32_t>(getgid()));
 }
 
 static void GetEUid(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   // uid_t is an uint32_t on all supported platforms.
   args.GetReturnValue().Set(static_cast<uint32_t>(geteuid()));
 }
 
 static void GetEGid(const FunctionCallbackInfo<Value>& args) {
+  Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   // gid_t is an uint32_t on all supported platforms.
   args.GetReturnValue().Set(static_cast<uint32_t>(getegid()));
 }
@@ -269,6 +277,7 @@ static void SetEUid(const FunctionCallbackInfo<Value>& args) {
 
 static void GetGroups(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
 
   int ngroups = getgroups(0, nullptr);
   if (ngroups == -1) return env->ThrowErrnoException(errno, "getgroups");
diff --git a/src/node_process_methods.cc b/src/node_process_methods.cc
index e53a5a7015c8e3..1f215eddc4f194 100644
--- a/src/node_process_methods.cc
+++ b/src/node_process_methods.cc
@@ -118,6 +118,7 @@ static void CPUUsage(const FunctionCallbackInfo<Value>& args) {
 
 static void Cwd(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   char buf[CHDIR_BUFSIZE];
   size_t cwd_len = sizeof(buf);
   int err = uv_cwd(buf, &cwd_len);
@@ -226,12 +227,13 @@ static void StopProfilerIdleNotifier(const FunctionCallbackInfo<Value>& args) {
 }
 
 static void Umask(const FunctionCallbackInfo<Value>& args) {
-  uint32_t old;
-
+  Environment* env = Environment::GetCurrent(args);
+  CHECK(env->has_run_bootstrapping_code());
   CHECK_EQ(args.Length(), 1);
   CHECK(args[0]->IsUndefined() || args[0]->IsUint32());
   Mutex::ScopedLock scoped_lock(per_process::umask_mutex);
 
+  uint32_t old;
   if (args[0]->IsUndefined()) {
     old = umask(0);
     umask(static_cast<mode_t>(old));