diff --git a/src/gsc_signal.erl b/src/gsc_signal.erl
index c26a4b6..1d55e50 100644
--- a/src/gsc_signal.erl
+++ b/src/gsc_signal.erl
@@ -39,7 +39,7 @@ is_block([#tk{pos = {_, BCol}} | Rest]) ->
 
 -spec gulp_block_items(Signal) -> Result when
         Signal :: [tk()],
-        Result :: {slurp, Items, NewSignal}
+        Result :: {gulp, Items}
                 | {error, any()},
         Items  :: [Signal],
         NewSignal :: Signal.