diff --git a/modules/mod_development/mod_development.erl b/modules/mod_development/mod_development.erl
index 69b8920c8f..9d507da14a 100644
--- a/modules/mod_development/mod_development.erl
+++ b/modules/mod_development/mod_development.erl
@@ -142,7 +142,7 @@ handle_file(_Verb, ".scss", F) ->
     OutPath = filename:join(filename:dirname(InPath), "css"),
     case filelib:is_dir(OutPath) of
         true ->
-            os:cmd("sass -C --update " ++ z_utils:os_escape(InPath) ++ ":" ++ z_utils:os_escape(OutPath));
+            os:cmd("sass -C --sourcemap=none --update " ++ z_utils:os_escape(InPath) ++ ":" ++ z_utils:os_escape(OutPath));
         false ->
             undefined
     end;