diff --git a/libraries/ESP32SSDP-1.1.0/ESP32SSDP.h b/libraries/ESP32SSDP-1.1.0/ESP32SSDP.h
index 1ef6b485..a90bae99 100644
--- a/libraries/ESP32SSDP-1.1.0/ESP32SSDP.h
+++ b/libraries/ESP32SSDP-1.1.0/ESP32SSDP.h
@@ -161,7 +161,7 @@ protected:
     SSDPTimer* _timer;
     uint16_t _port;
     uint8_t _ttl;
-    uint8_t _interval;
+    uint32_t _interval;
 
     ssdp_reply_slot_item_t *_replySlots[SSDP_MAX_REPLY_SLOTS];
     IPAddress _respondToAddr;