diff --git a/lib/pddl/include/pddl/detail/parsing/Constant.h b/lib/pddl/include/pddl/detail/parsing/Constant.h
index dd19039..854bb81 100644
--- a/lib/pddl/include/pddl/detail/parsing/Constant.h
+++ b/lib/pddl/include/pddl/detail/parsing/Constant.h
@@ -16,8 +16,7 @@ namespace detail
 //
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-std::experimental::optional<ast::ConstantPointer> testParsingConstant(Context &context, ASTContext &astContext);
-ast::ConstantPointer parseConstant(Context &context, ASTContext &astContext);
+std::experimental::optional<ast::ConstantPointer> parseConstant(Context &context, ASTContext &astContext);
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
diff --git a/lib/pddl/src/pddl/detail/parsing/Constant.cpp b/lib/pddl/src/pddl/detail/parsing/Constant.cpp
index ce6632b..367f33c 100644
--- a/lib/pddl/src/pddl/detail/parsing/Constant.cpp
+++ b/lib/pddl/src/pddl/detail/parsing/Constant.cpp
@@ -50,7 +50,7 @@ std::experimental::optional<ast::ConstantPointer> findConstant(const std::string
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-std::experimental::optional<ast::ConstantPointer> testParsingConstant(Context &context, ASTContext &astContext)
+std::experimental::optional<ast::ConstantPointer> parseConstant(Context &context, ASTContext &astContext)
 {
 	auto &tokenizer = context.tokenizer;
 
@@ -65,20 +65,5 @@ std::experimental::optional<ast::ConstantPointer> testParsingConstant(Context &c
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-ast::ConstantPointer parseConstant(Context &context, ASTContext &astContext)
-{
-	auto &tokenizer = context.tokenizer;
-
-	const auto constantName = tokenizer.getIdentifier();
-	auto constant = findConstant(constantName, astContext);
-
-	if (!constant)
-		throw ParserException(tokenizer.location(), "undeclared constant “" + constantName + "”");
-
-	return std::move(constant.value());
-}
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
 }
 }
diff --git a/lib/pddl/src/pddl/detail/parsing/Term.cpp b/lib/pddl/src/pddl/detail/parsing/Term.cpp
index 386ee64..977c5d1 100644
--- a/lib/pddl/src/pddl/detail/parsing/Term.cpp
+++ b/lib/pddl/src/pddl/detail/parsing/Term.cpp
@@ -28,7 +28,7 @@ std::experimental::optional<ast::Term> parseTerm(Context &context, ASTContext &a
 		return std::move(variable.value());
 
 	// Parse argument if it is a constant
-	auto constant = testParsingConstant(context, astContext);
+	auto constant = parseConstant(context, astContext);
 
 	if (constant)
 		return std::move(constant.value());