diff --git a/src/platform/Darwin/BleConnectionDelegateImpl.mm b/src/platform/Darwin/BleConnectionDelegateImpl.mm
index 9f05bb65edae16..ab8242ea649060 100644
--- a/src/platform/Darwin/BleConnectionDelegateImpl.mm
+++ b/src/platform/Darwin/BleConnectionDelegateImpl.mm
@@ -91,10 +91,13 @@ - (BOOL)isConnecting;
         dispatch_queue_t bleWorkQueue;
 
         void BleConnectionDelegateImpl::NewConnection(
-            Ble::BleLayer * bleLayer, void * appState, const SetupDiscriminator & deviceDiscriminator)
+            Ble::BleLayer * bleLayer, void * appState, const SetupDiscriminator & inDeviceDiscriminator)
         {
             assertChipStackLockedByCurrentThread();
 
+            // Make a copy of the device discriminator for the block to capture.
+            SetupDiscriminator deviceDiscriminator = inDeviceDiscriminator;
+
             ChipLogProgress(Ble, "%s", __FUNCTION__);
             if (!bleWorkQueue) {
                 bleWorkQueue = dispatch_queue_create(kBleWorkQueueName, DISPATCH_QUEUE_SERIAL_WITH_AUTORELEASE_POOL);