1 files changed, 3 insertions, 2 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java b/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
index 59fb70ced3..5f2b1aba1b 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
@@ -45,8 +45,9 @@ public class FunctionExpression extends QueryExpression {
   }
 
   @Override
-  public <T> void eval(QueryEnvironment<T> env, VariableContext<T> context, Callback<T> callback)
-      throws QueryException, InterruptedException {
+  protected <T> void evalImpl(
+      QueryEnvironment<T> env, VariableContext<T> context, Callback<T> callback)
+          throws QueryException, InterruptedException {
     function.eval(env, context, this, args, callback);
   }