diff --git a/acme.sh b/acme.sh
index dd21785d..6a78c4c8 100755
--- a/acme.sh
+++ b/acme.sh
@@ -5073,6 +5073,15 @@ $_authorizations_map"
       response="$(echo "$response" | _normalizeJson)"
       _debug2 response "$response"
 
+      status=$(echo "$response" | _egrep_o 'Challenge is already valid' | cut -d ' ' -f 4 | head -1)
+      if [ "$status" = "valid" ]; then
+        _info "$(__green Success)"
+        _stopserver "$serverproc"
+        serverproc=""
+        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
+        break
+      fi
+
       status=$(echo "$response" | _egrep_o '"status":"[^"]*' | cut -d : -f 2 | tr -d '"')
       _debug2 status "$status"
       if _contains "$status" "invalid"; then