diff --git a/common/start.tf b/common/start.tf
index 300c927..16766bd 100644
--- a/common/start.tf
+++ b/common/start.tf
@@ -6,7 +6,7 @@
 /def -Fp2 -mregexp -t"^(> )+" _unprompty = /substitute %{PR}
 
 /def log_on = \
-	/eval /log -w%{obecnie_swiat} %{logpath}/%{obecnie_swiat}/%{obecnie_expujacy}_$[ftime("%Y-%b-%d", time())].log
+	/eval /log -w%{obecnie_swiat} %{logpath}/%{obecnie_swiat}/%{obecnie_expujacy}_$[ftime("%Y-%m-%d", time())].log
 
 /def -mglob -Fp2 -t'* z hosta:*' _logged = \
 	/reload %;\