diff --git a/WiFiManager.cpp b/WiFiManager.cpp
index 31a91c5..21c9e38 100644
--- a/WiFiManager.cpp
+++ b/WiFiManager.cpp
@@ -961,7 +961,7 @@ bool WiFiManager::shutdownConfigPortal(){
 
   if(webPortalActive) return false;
 
-  if(configPortalActive){
+  if(configPortalActive && dnsServer){
     //DNS handler
     dnsServer->processNextRequest();
   }