diff --git a/reactos/ntoskrnl/ex/sysinfo.c b/reactos/ntoskrnl/ex/sysinfo.c
index 0d30d5978a1..3f5bf6f2663 100644
--- a/reactos/ntoskrnl/ex/sysinfo.c
+++ b/reactos/ntoskrnl/ex/sysinfo.c
@@ -2605,6 +2605,7 @@ NtFlushInstructionCache(
     {
         /* Detach from the process */
         KeUnstackDetachProcess(&ApcState);
+        ObDereferenceObject(Process);
     }
 
     return STATUS_SUCCESS;