diff --git a/src/calanonsync/settings.go b/src/calanonsync/settings.go
index 4c87579..3604d34 100644
--- a/src/calanonsync/settings.go
+++ b/src/calanonsync/settings.go
@@ -31,7 +31,7 @@ func LoadSettings() Settings {
 		panic(err)
 	}
 
-	if settings.CalDAV.URL != "" && strings.HasSuffix(settings.CalDAV.URL, "/") {
+	if settings.CalDAV.URL != "" && !strings.HasSuffix(settings.CalDAV.URL, "/") {
 		settings.CalDAV.URL += "/"
 	}