diff --git a/src/tests/src/solver/expressions/test_TimeIndexVisitor.cpp b/src/tests/src/solver/expressions/test_TimeIndexVisitor.cpp
index ffdcde49fa..98a7f2e06c 100644
--- a/src/tests/src/solver/expressions/test_TimeIndexVisitor.cpp
+++ b/src/tests/src/solver/expressions/test_TimeIndexVisitor.cpp
@@ -122,9 +122,8 @@ static Node* singleNode(Registry<Node>& registry)
     return registry.create<T>("hello", "world");
 }
 
-static const std::vector<Node* (*)(Registry<Node>& registry)> singleNode_ALL{
-  &singleNode<PortFieldNode>,
-  &singleNode<PortFieldSumNode>,
+static const std::vector singleNode_ALL{&singleNode<PortFieldNode>,
+                                        &singleNode<PortFieldSumNode>,
   &singleNode<ComponentVariableNode>,
   &singleNode<ComponentParameterNode>};