diff --git a/Makefile b/Makefile
index addc9b80e89962e5c3ee94011afd60f3b5ef6509..28f98cf098a5d8c1074404e10bd4f118cf92bddb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 NAME = sl-calendar-gui
-MAIN = sl-calendar.py
+MAIN = SlCalendar.py
 
 DIRNAME = $(NAME:-gui=)
 MODNAME = $(MAIN:.py=)