diff --git a/Source/CocoaMQTT.swift b/Source/CocoaMQTT.swift
index cb462c37..e7bbdb3f 100644
--- a/Source/CocoaMQTT.swift
+++ b/Source/CocoaMQTT.swift
@@ -612,6 +612,7 @@ extension CocoaMQTT: CocoaMQTTSocketDelegate {
         didDisconnect(self, err)
 
         guard !is_internal_disconnected else {
+            is_internal_disconnected = false
             return
         }
 
diff --git a/Source/CocoaMQTT5.swift b/Source/CocoaMQTT5.swift
index f8fb01f0..50d11a6b 100644
--- a/Source/CocoaMQTT5.swift
+++ b/Source/CocoaMQTT5.swift
@@ -669,6 +669,7 @@ extension CocoaMQTT5: CocoaMQTTSocketDelegate {
         didDisconnect(self, err)
 
         guard !is_internal_disconnected else {
+            is_internal_disconnected = false
             return
         }