diff --git a/reactos/ntoskrnl/ke/amd64/stubs.c b/reactos/ntoskrnl/ke/amd64/stubs.c
index e5409c9b97d..96d2b341dee 100644
--- a/reactos/ntoskrnl/ke/amd64/stubs.c
+++ b/reactos/ntoskrnl/ke/amd64/stubs.c
@@ -168,3 +168,14 @@ ExpInterlockedFlushSList(
     UNIMPLEMENTED;
     return NULL;
 }
+
+NTSTATUS
+NTAPI
+KiCallUserMode(
+    IN PVOID *OutputBuffer,
+    IN PULONG OutputLength)
+{
+    UNIMPLEMENTED;
+    return STATUS_UNSUCCESSFUL;
+}
+