diff --git a/cylc/flow/task_proxy.py b/cylc/flow/task_proxy.py
index 84eb8900663..c58456f212c 100644
--- a/cylc/flow/task_proxy.py
+++ b/cylc/flow/task_proxy.py
@@ -528,7 +528,8 @@ def satisfy_me(self, outputs: 'Iterable[Tokens]') -> None:
         used = self.state.satisfy_me(outputs)
         for output in set(outputs) - used:
             LOG.warning(
-                f"{self.identity} does not depend on {output.relative_id_with_selectors}"
+                f"{self.identity} does not depend on"
+                f" {output.relative_id_with_selectors}"
             )
 
     def clock_expire(self) -> bool: