diff --git a/src/main/java/space/caoshd/otone/util/StrUtils.java b/src/main/java/space/caoshd/otone/util/StrUtils.java
index 6a03c39..62a8007 100644
--- a/src/main/java/space/caoshd/otone/util/StrUtils.java
+++ b/src/main/java/space/caoshd/otone/util/StrUtils.java
@@ -15,7 +15,7 @@ public class StrUtils {
     }
 
     public static String removePrefix(String str, String prefix) {
-        if (str.startsWith(prefix)) {
+        if (str.toLowerCase().startsWith(prefix)) {
             return str.substring(prefix.length());
         } else {
             return str;