diff --git a/src/tabs/basetabs.py b/src/tabs/basetabs.py
index d54d4578..7e122985 100644
--- a/src/tabs/basetabs.py
+++ b/src/tabs/basetabs.py
@@ -290,7 +290,8 @@ class Tab(object):
             else:
                 arg = xhtml.clean_text_simple(arg)
             if func:
-                self.input.reset_completion()
+                if hasattr(self.input, "reset_completion"):
+                    self.input.reset_completion()
                 func(arg)
             return True
         else: