diff --git a/resources/install/scripts/call_forward.lua b/resources/install/scripts/call_forward.lua
index a93c50bf69..ddb5e735dc 100644
--- a/resources/install/scripts/call_forward.lua
+++ b/resources/install/scripts/call_forward.lua
@@ -191,7 +191,7 @@
 					cmd = "user_exists id ".. forward_all_destination .." "..domain_name;
 				end
 				user_exists = trim(api:executeString(cmd));
-				if (user_exists) then
+				if (user_exists == "true") then
 					if (destination_user ~= nil) then
 						dial_string = dial_string .. "user/"..destination_user.."@"..domain_name;
 					else