--- a/python/mach/mach/dispatcher.py
+++ b/python/mach/mach/dispatcher.py
@@ -416,17 +416,17 @@ class CommandAction(argparse.Action):
                     if h.cls.__name__ != 'DeprecatedCommands']
         # We first try to look for a valid command that is very similar to the given command.
         suggested_commands = difflib.get_close_matches(command, names, cutoff=0.8)
         # If we find more than one matching command, or no command at all,
         # we give command suggestions instead (with a lower matching threshold).
         # All commands that start with the given command (for instance:
         # 'mochitest-plain', 'mochitest-chrome', etc. for 'mochitest-')
         # are also included.
-        if len(suggested_commands) != 1:
+        if len(suggested_commands) != 1 or command == 'uninstall':
             suggested_commands = set(difflib.get_close_matches(command, names, cutoff=0.5))
             suggested_commands |= {cmd for cmd in names if cmd.startswith(command)}
             raise UnknownCommandError(command, 'run', suggested_commands)
         sys.stderr.write("We're assuming the '%s' command is '%s' and we're "
                          "executing it for you.\n\n" % (command, suggested_commands[0]))
         return suggested_commands[0]