diff --git a/reactos/subsystems/win32/csrss/csrss.c b/reactos/subsystems/win32/csrss/csrss.c
index 15d0bf909bc..dfd4e4e47f1 100644
--- a/reactos/subsystems/win32/csrss/csrss.c
+++ b/reactos/subsystems/win32/csrss/csrss.c
@@ -41,7 +41,7 @@ _main(int argc,
 {
     KPRIORITY BasePriority = (8 + 1) + 4;
     NTSTATUS Status;
-    //ULONG Response;
+    ULONG Response;
     UNREFERENCED_PARAMETER(envp);
     UNREFERENCED_PARAMETER(DebugFlag);