2 files changed, 6 insertions, 7 deletions
diff --git a/src/backends/reference/RefBackend.cpp b/src/backends/reference/RefBackend.cpp
index d7de161dec..0a296be016 100644
--- a/src/backends/reference/RefBackend.cpp
+++ b/src/backends/reference/RefBackend.cpp
@@ -67,13 +67,13 @@ IBackendInternal::ILayerSupportSharedPtr RefBackend::GetLayerSupport() const
     return layerSupport;
 }
 
-IBackendInternal::SubgraphViewUniquePtr RefBackend::OptimizeSubgraphView(const SubgraphView& subgraph,
-                                                                         bool& optimizationAttempted) const
+OptimizationViews RefBackend::OptimizeSubgraphView(const SubgraphView& subgraph) const
 {
-    // Not trying to optimize the given sub-graph
-    optimizationAttempted = false;
+    OptimizationViews optimizationViews;
 
-    return SubgraphViewUniquePtr{};
+    optimizationViews.AddUntouchedSubgraph(SubgraphView(subgraph));
+
+    return optimizationViews;
 }
 
 } // namespace armnn
diff --git a/src/backends/reference/RefBackend.hpp b/src/backends/reference/RefBackend.hpp
index af756e8dab..06179bd939 100644
--- a/src/backends/reference/RefBackend.hpp
+++ b/src/backends/reference/RefBackend.hpp
@@ -28,8 +28,7 @@ public:
     IBackendInternal::Optimizations GetOptimizations() const override;
     IBackendInternal::ILayerSupportSharedPtr GetLayerSupport() const override;
 
-    IBackendInternal::SubgraphViewUniquePtr OptimizeSubgraphView(const SubgraphView& subgraph,
-                                                                 bool& optimizationAttempted) const override;
+    OptimizationViews OptimizeSubgraphView(const SubgraphView& subgraph) const override;
 };
 
 } // namespace armnn