diff --git a/src/nl/jeroenhoek/josm/gridify/GridifyAction.java b/src/nl/jeroenhoek/josm/gridify/GridifyAction.java
index 6262048..1b44396 100644
--- a/src/nl/jeroenhoek/josm/gridify/GridifyAction.java
+++ b/src/nl/jeroenhoek/josm/gridify/GridifyAction.java
@@ -193,6 +193,7 @@ Optional<InputData> inputDataFromSelection(Collection<OsmPrimitive> selection) {
         return Optional.empty();
     }
 
+    @SuppressWarnings("MixedMutabilityReturnType")
     List<Node> nodesBetween(Node start, Node stop, int n) {
         if (n < 1) return Collections.emptyList();