diff --git a/src/armnn/layers/ConvertBf16ToFp32Layer.cpp b/src/armnn/layers/ConvertBf16ToFp32Layer.cpp
index d7ad692..a0958e3 100644
--- a/src/armnn/layers/ConvertBf16ToFp32Layer.cpp
+++ b/src/armnn/layers/ConvertBf16ToFp32Layer.cpp
@@ -49,10 +49,7 @@
 
 void ConvertBf16ToFp32Layer::ExecuteStrategy(IStrategy& strategy) const
 {
-    // these conversion layers are only inserted by the
-    // optimizer and so will never be in an input graph.
-    IgnoreUnused(strategy);
-    throw armnn::Exception("ConvertBf16ToFp32Layer should never appear in an input graph");
+    strategy.ExecuteStrategy(this, GetParameters(), {}, GetName());
 }
 
 } // namespace armnn
diff --git a/src/armnn/layers/ConvertFp16ToFp32Layer.cpp b/src/armnn/layers/ConvertFp16ToFp32Layer.cpp
index 423721d..e3865a6 100644
--- a/src/armnn/layers/ConvertFp16ToFp32Layer.cpp
+++ b/src/armnn/layers/ConvertFp16ToFp32Layer.cpp
@@ -49,10 +49,7 @@
 
 void ConvertFp16ToFp32Layer::ExecuteStrategy(IStrategy& strategy) const
 {
-    // these conversion layers are only inserted by the
-    // optimizer and so will never be in an input graph.
-    IgnoreUnused(strategy);
-    throw armnn::Exception("ConvertFp16ToFp32Layer should never appear in an input graph");
+    strategy.ExecuteStrategy(this, GetParameters(), {}, GetName());
 }
 
 } // namespace armnn
diff --git a/src/armnn/layers/ConvertFp32ToBf16Layer.cpp b/src/armnn/layers/ConvertFp32ToBf16Layer.cpp
index 1556dee..7c98eea 100644
--- a/src/armnn/layers/ConvertFp32ToBf16Layer.cpp
+++ b/src/armnn/layers/ConvertFp32ToBf16Layer.cpp
@@ -50,10 +50,7 @@
 
 void ConvertFp32ToBf16Layer::ExecuteStrategy(IStrategy& strategy) const
 {
-    // these conversion layers are only inserted by the
-    // optimizer and so will never be in an input graph.
-    IgnoreUnused(strategy);
-    throw armnn::Exception("ConvertFp32ToBf16Layer should never appear in an input graph");
+    strategy.ExecuteStrategy(this, GetParameters(), {}, GetName());
 }
 
 } // namespace armnn
diff --git a/src/armnn/layers/ConvertFp32ToFp16Layer.cpp b/src/armnn/layers/ConvertFp32ToFp16Layer.cpp
index 748cde3..36708c5 100644
--- a/src/armnn/layers/ConvertFp32ToFp16Layer.cpp
+++ b/src/armnn/layers/ConvertFp32ToFp16Layer.cpp
@@ -49,10 +49,7 @@
 
 void ConvertFp32ToFp16Layer::ExecuteStrategy(IStrategy& strategy) const
 {
-    // These conversion layers are only inserted by the
-    // optimizer and so will never be in an input graph.
-    IgnoreUnused(strategy);
-    throw armnn::Exception("ConvertFp32ToFp16Layer should never appear in an input graph");
+    strategy.ExecuteStrategy(this, GetParameters(), {}, GetName());
 }
 
 } // namespace armnn