diff --git a/modules/filemon.py b/modules/filemon.py
index 91bb249..16a549f 100644
--- a/modules/filemon.py
+++ b/modules/filemon.py
@@ -95,10 +95,13 @@ def handleShellCmd(message, message_from_id, channel_number, isDM, deviceID):
         return "x: command not authorized in group chat"
     
     if enable_runShellCmd:
-        if message.startswith("x: "):
-            command = message.removeprefix("x: ").strip()
-        elif message.startswith("x:"):
-            command = message.removeprefix("x:").strip()
+        if message.lower().startswith("x:"):
+            # Remove 'x:' (case-insensitive)
+            command = message[2:]
+            # If there's a space after 'x:', remove it
+            if command.startswith(" "):
+                command = command[1:]
+            command = command.strip()
         else:
             return "x: invalid command format"
         
@@ -113,4 +116,5 @@ def handleShellCmd(message, message_from_id, channel_number, isDM, deviceID):
             logger.warning(f"FileMon: Error running shell command: {e}")
             return "x: command error"
     else:
-        return "x: command is disabled"
\ No newline at end of file
+        logger.debug("FileMon: x: command is disabled by no enable_runShellCmd")
+        return "x: command is disabled"