diff --git a/delegate/src/test/DelegateOptionsTest.cpp b/delegate/src/test/DelegateOptionsTest.cpp
index 54f9c8f..126bf30 100644
--- a/delegate/src/test/DelegateOptionsTest.cpp
+++ b/delegate/src/test/DelegateOptionsTest.cpp
@@ -87,7 +87,7 @@
     // Enable debug with debug callback function
     armnn::OptimizerOptions optimizerOptions(false, true, false, false);
     bool callback = false;
-    auto mockCallback = [&](armnn::LayerGuid guid, unsigned int slotIndex, armnn::ITensorHandle* tensor)
+    auto mockCallback = [&](LayerGuid guid, unsigned int slotIndex, armnn::ITensorHandle* tensor)
     {
         armnn::IgnoreUnused(guid);
         armnn::IgnoreUnused(slotIndex);