diff --git a/aider/coder.py b/aider/coder.py
index 05c2a4a64..71d178099 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -228,7 +228,7 @@ class Coder:
         if not inp:
             return
 
-        if inp.startswith("/"):
+        if self.commands.is_command(inp):
             return self.commands.run(inp)
 
         return self.send_new_user_message(inp)
diff --git a/aider/commands.py b/aider/commands.py
index 4725602db..b5ccffbef 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -10,6 +10,10 @@ class Commands:
         self.io = io
         self.coder = coder
 
+    def is_command(self, inp):
+        if inp[0] == '/':
+            return True
+
     def help(self):
         "Show help about all commands"
         commands = self.get_commands()