diff --git a/OAT.xml b/OAT.xml
index d09d3be..df6c1f1 100644
--- a/OAT.xml
+++ b/OAT.xml
@@ -59,10 +59,11 @@ Note:If the text contains special characters, please escape them according to th
         <filefilterlist>
             <filefilter name="binaryFileTypePolicyFilter" desc="Filters for binary file policies" >
                 <filteritem type="filename" name=".*.pem" desc="Testing of API for HTTPS configuration certificates requires a certificate input"/>
+                <filteritem type="filename" name=".*.png" desc="png for http"/>
             </filefilter>
             <filefilter name="defaultPolicyFilter" desc="Filters for compatibility，license header policies">
                 <filteritem type="filename" name=".*.toml" desc="toml treats as readme file"/>
-	    </filefilter>
+            </filefilter>
             <filefilter name="copyrightPolicyFilter" desc="Filters for copyright  policies">
                 <filteritem type="filename" name=".*.toml" desc="toml treats as readme file"/>
             </filefilter>