diff --git a/klippy/klippy.py b/klippy/klippy.py
index 217ea53b..80e62219 100644
--- a/klippy/klippy.py
+++ b/klippy/klippy.py
@@ -269,6 +269,9 @@ def main():
             "CPU: %s" % (util.get_cpu_info(),),
             "Python: %s" % (repr(sys.version),)])
         logging.info(versions)
+    elif not options.debugoutput:
+        logging.warning("No log file specified!"
+                        " Severe timing issues may result!")
 
     # Start Printer() class
     while 1: