diff --git a/ntoskrnl/kd64/kdapi.c b/ntoskrnl/kd64/kdapi.c
index e7d304bf726..06c80a29668 100644
--- a/ntoskrnl/kd64/kdapi.c
+++ b/ntoskrnl/kd64/kdapi.c
@@ -2165,7 +2165,7 @@ KdSystemDebugControl(
     _In_ KPROCESSOR_MODE PreviousMode)
 {
     /* Handle some internal commands */
-    switch (Command)
+    switch ((ULONG)Command)
     {
 #if DBG
         case ' soR': /* ROS-INTERNAL */