diff --git a/include/plasp/pddl/expressions/Type.h b/include/plasp/pddl/expressions/Type.h
index a0ac7d8..4029760 100644
--- a/include/plasp/pddl/expressions/Type.h
+++ b/include/plasp/pddl/expressions/Type.h
@@ -20,8 +20,8 @@ namespace expressions
 //
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-ExpressionPointer parseExistingPrimitiveType(utils::Parser &parser, Context &context, const Variables &parameters);
-//ExpressionPointer parseExistingType(utils::Parser &parser, Context &context, const Variables &parameters);
+ExpressionPointer parseExistingPrimitiveType(utils::Parser &parser, Context &context,
+	const Variables &parameters);
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
diff --git a/src/plasp/pddl/expressions/Type.cpp b/src/plasp/pddl/expressions/Type.cpp
index 4490828..6f7e3ee 100644
--- a/src/plasp/pddl/expressions/Type.cpp
+++ b/src/plasp/pddl/expressions/Type.cpp
@@ -16,31 +16,16 @@ namespace expressions
 //
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-ExpressionPointer parseExistingPrimitiveType(utils::Parser &parser, Context &context, const Variables &parameters)
+ExpressionPointer parseExistingPrimitiveType(utils::Parser &parser, Context &context,
+	const Variables &parameters)
 {
-	auto reference = std::make_unique<Reference<PrimitiveType>>(PrimitiveType::parseExisting(parser, context));
+	auto primitiveType = PrimitiveType::parseExisting(parser, context);
 
-	return reference;
+	return std::make_unique<Reference<PrimitiveType>>(primitiveType);
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-/*ExpressionPointer parseExistingType(utils::Parser &parser, Context &context, const Variables &parameters)
-{
-	parser.skipWhiteSpace();
-
-	// Parse either type (always begins with opening parenthesis)
-	if (parser.currentCharacter() == '(')
-		return Either::parse(parser, context, parameters, parseExistingPrimitiveType);
-
-	// Parse primitive type
-	auto type = std::make_unique<Reference<PrimitiveType>>(PrimitiveType::parseExisting(parser, context));
-
-	return type;
-}*/
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
 }
 }
 }