diff --git a/include/plasp/sas/Operator.h b/include/plasp/sas/Operator.h
index a47361b..7fa4d2a 100644
--- a/include/plasp/sas/Operator.h
+++ b/include/plasp/sas/Operator.h
@@ -28,11 +28,11 @@ using Operators = std::vector<Operator>;
 class Operator
 {
 	public:
-		static Operator fromSAS(std::istream &istream, const Variables &variables);
-
 		using Condition = AssignedVariable;
 		using Conditions = AssignedVariables;
 
+		static Operator fromSAS(std::istream &istream, const Variables &variables);
+
 	public:
 		const Predicate &predicate() const;
 		const Conditions &preconditions() const;