diff --git a/build/css-renamer.go b/build/css-renamer.go
index 0cf6331..65ff1ca 100644
--- a/build/css-renamer.go
+++ b/build/css-renamer.go
@@ -57,16 +57,16 @@ func createCssMap() map[string]string {
 // Renames file by paths.
 func renameFile(oldPath, newPath string) {
 	// rename the file
-	err := os.Rename(removeFirstChar(oldPath), removeFirstChar(newPath))
+	err := os.Rename(oldPath, newPath)
 	if err != nil {
 		panic(err)
 	}
 }
 
 // Removes first character from string.
-func removeFirstChar(s string) string {
-	return s[1:]
-}
+// func removeFirstChar(s string) string {
+// 	return s[1:]
+// }
 
 // Generates a random string.
 func randomString(length int) string {