diff --git a/lua/copilot_cmp/source.lua b/lua/copilot_cmp/source.lua
index 84bed53..d32a33b 100644
--- a/lua/copilot_cmp/source.lua
+++ b/lua/copilot_cmp/source.lua
@@ -20,7 +20,7 @@ end
 
 source.is_available = function(self)
   -- client is stopped.
-  if self.client.is_stopped() or not self.client.name == "copilot" then
+  if self.client:is_stopped() or not self.client.name == "copilot" then
     return false
   end