diff --git a/Common/source/customskinloader/utils/HttpRequestUtil.java b/Common/source/customskinloader/utils/HttpRequestUtil.java
index 8a9a8d6..ffcada5 100644
--- a/Common/source/customskinloader/utils/HttpRequestUtil.java
+++ b/Common/source/customskinloader/utils/HttpRequestUtil.java
@@ -138,6 +138,8 @@ public class HttpRequestUtil {
             CustomSkinLoader.logger.debug("Successfully request (Response Code: "+c.getResponseCode()+" , Content Length: "+c.getContentLength()+")");
             if(responce.responceCode==HttpURLConnection.HTTP_NOT_MODIFIED)
                 return loadFromCache(request,responce);
+            if (responce.responceCode == HttpURLConnection.HTTP_NO_CONTENT)
+                request.cacheTime = 3600;
             
             //Load Content
             InputStream is="gzip".equals(c.getContentEncoding())?new GZIPInputStream(c.getInputStream()):c.getInputStream();
diff --git a/Common/source/customskinloader/utils/MinecraftUtil.java b/Common/source/customskinloader/utils/MinecraftUtil.java
index 5768693..b5c8f0b 100644
--- a/Common/source/customskinloader/utils/MinecraftUtil.java
+++ b/Common/source/customskinloader/utils/MinecraftUtil.java
@@ -99,23 +99,19 @@ public class MinecraftUtil {
         }
     }
     
-    public static boolean isCoreFile(URL url){
-        Matcher m;
-        try{
-            m=MINECRAFT_CORE_FILE_PATTERN.matcher(URLDecoder.decode(url.getPath(),"UTF-8"));
-        }catch(Exception e){
-            e.printStackTrace();
-            return false;
-        }
-        return m.matches();
+    public static boolean isCoreFile(URL url) {
+        return regexMatch(url, MINECRAFT_CORE_FILE_PATTERN);
     }
     
     private final static Pattern LIBRARY_FILE_PATTERN = Pattern.compile("^(.*?)/libraries/(.*?)/([^\\/\\\\]*?).jar$");
-    public static boolean isLibraryFile(URL url){
+    public static boolean isLibraryFile(URL url) {
+        return regexMatch(url, LIBRARY_FILE_PATTERN);
+    }
+    private static boolean regexMatch(URL url, Pattern p) {
         Matcher m;
-        try{
-            m=LIBRARY_FILE_PATTERN.matcher(URLDecoder.decode(url.getPath(),"UTF-8"));
-        }catch(Exception e){
+        try {
+            m=p.matcher(URLDecoder.decode(url.getPath(), "UTF-8"));
+        } catch (Exception e) {
             e.printStackTrace();
             return false;
         }