diff --git a/src/main/java/com/google/devtools/build/lib/graph/Digraph.java b/src/main/java/com/google/devtools/build/lib/graph/Digraph.java
index 22db91b..c8d5a05 100644
--- a/src/main/java/com/google/devtools/build/lib/graph/Digraph.java
+++ b/src/main/java/com/google/devtools/build/lib/graph/Digraph.java
@@ -356,10 +356,10 @@
    * null pointer is not a valid label.
    */
   public Node<T> createNode(T label) {
-    return nodes.computeIfAbsent(label, this::createNodeNative);
+    return nodes.computeIfAbsent(label, Digraph::createNodeNative);
   }
 
-  private Node<T> createNodeNative(T label) {
+  private static <T> Node<T> createNodeNative(T label) {
     Preconditions.checkNotNull(label);
     return new Node<>(label);
   }