diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 162c692d7..7a99978b6 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -52,6 +52,7 @@ Bugs fixed
 - Bug 2561 - TCP can not use Connect after a BindToNetDevice
 - Bug 2563 - Modify pybindgen version check to >= minimum version required
 - Bug 2564 - Simulation crashes when CtsTimeout is triggered for A-MPDU transmissions
+- Bug 2566 - BlockAckManager::GetNRetryNeededPackets missing some packets in the queue
 
 Known issues
 ------------
diff --git a/src/wifi/model/block-ack-manager.cc b/src/wifi/model/block-ack-manager.cc
index 0e1c22f6b..9e8c34759 100644
--- a/src/wifi/model/block-ack-manager.cc
+++ b/src/wifi/model/block-ack-manager.cc
@@ -534,7 +534,7 @@ BlockAckManager::GetNRetryNeededPackets (Mac48Address recipient, uint8_t tid) co
                 }
             }
           //go to next packet
-          if (it != m_retryPackets.end ())
+          else
             {
               it++;
             }