diff --git a/reactos/ntoskrnl/ke/arm/time.c b/reactos/ntoskrnl/ke/arm/time.c
index aee799f43ce..22d0ae53f14 100644
--- a/reactos/ntoskrnl/ke/arm/time.c
+++ b/reactos/ntoskrnl/ke/arm/time.c
@@ -182,7 +182,7 @@ KeUpdateRunTime(IN PKTRAP_FRAME TrapFrame,
     //
     // Check if we came from user mode
     //
-    if (0) //(TrapFrame->PreviousMode != KernelMode)
+    if (TrapFrame->PreviousMode != KernelMode)
     {
         //
         // Increase process user time