diff --git a/RpcCore/RpcCore.c b/RpcCore/RpcCore.c
index 5db1837..f181b8c 100644
--- a/RpcCore/RpcCore.c
+++ b/RpcCore/RpcCore.c
@@ -223,11 +223,10 @@ BOOL WINAPI GetRpcServerAddressInProcess(DWORD Pid,RpcCoreInternalCtxt_T* pRpcCo
 	hProcess = ProcexpOpenProcess(PROCESS_ALL_ACCESS, FALSE, Pid);
 	if (hProcess == NULL) goto End;
 
-	EnumProcessModulesEx(hProcess, NULL, 0, &cbSize, LIST_MODULES_ALL);
-	if (cbSize == 0) goto End;
+    if (!EnumProcessModulesEx(hProcess, NULL, 0, &cbSize, LIST_MODULES_ALL)) goto End;
 	pHmodule = (HMODULE*)malloc(cbSize);
     if (pHmodule == NULL) goto End;
-	EnumProcessModulesEx(hProcess, pHmodule, cbSize, &cbSize, LIST_MODULES_ALL);
+    if (!EnumProcessModulesEx(hProcess, pHmodule, cbSize, &cbSize, LIST_MODULES_ALL)) goto End;
 
 	for(ULONG i=0;i<cbSize/sizeof(*pHmodule);i++)
 	{