diff --git a/test/tools/ossfuzz/protoToYul.h b/test/tools/ossfuzz/protoToYul.h
index fa6455c90..b412a795c 100644
--- a/test/tools/ossfuzz/protoToYul.h
+++ b/test/tools/ossfuzz/protoToYul.h
@@ -283,6 +283,10 @@ private:
 	/// enum of type Program_Version
 	solidity::langutil::EVMVersion evmVersionMapping(Program_Version const& _x);
 
+	/// Returns an EVMVersion object corresponding to the protobuf
+	/// enum of type Program_Version
+	langutil::EVMVersion evmVersionMapping(Program_Version const& _x);
+
 	/// Returns a monotonically increasing counter that starts from zero.
 	unsigned counter()
 	{