diff --git a/fhem/FHEM/HttpUtils.pm b/fhem/FHEM/HttpUtils.pm
index 83cfdefc8..f242b3ac4 100644
--- a/fhem/FHEM/HttpUtils.pm
+++ b/fhem/FHEM/HttpUtils.pm
@@ -155,6 +155,12 @@ HttpUtils_dumpDnsCache()
   return join("\n", @ret);
 }
 
+sub
+HttpUtils_clearDnsCache()
+{
+  %HU_dnsCache = ();
+}
+
 sub
 HttpUtils_dnsParse($$$)
 {