diff --git a/docker2mqtt/docker2mqtt.py b/docker2mqtt/docker2mqtt.py
index 401a927..75ec4a0 100755
--- a/docker2mqtt/docker2mqtt.py
+++ b/docker2mqtt/docker2mqtt.py
@@ -267,7 +267,7 @@ def loop_busy(self, raise_known_exceptions: bool = False) -> None:
                 MAX_QUEUE_SIZE
                 - max(self.docker_events.qsize(), self.docker_stats.qsize())
             )
-            main_logger.debug("Sleep for %f.5fs until next iteration", sleep_time)
+            main_logger.debug("Sleep for %.5fs until next iteration", sleep_time)
             sleep(sleep_time)
 
     def get_docker_version(self) -> str: