diff --git a/res/static/res/img/checker16.png b/res/static/res/img/checker16.png
new file mode 100644
index 0000000..b323ee4
Binary files /dev/null and b/res/static/res/img/checker16.png differ
diff --git a/webcontroller/templates/funcs.go b/webcontroller/templates/funcs.go
index 3075cd4..814e374 100644
--- a/webcontroller/templates/funcs.go
+++ b/webcontroller/templates/funcs.go
@@ -14,7 +14,7 @@ var funcMap = template.FuncMap{
 }
 
 func bgPatternCount() uint8 {
-	return uint8(time.Now().UnixNano() % 16)
+	return uint8(time.Now().UnixNano() % 17)
 }
 
 func debugMode() bool {