diff --git a/sdk/src/main/java/com/google/cloud/dataflow/sdk/util/GroupAlsoByWindowViaWindowSetDoFn.java b/sdk/src/main/java/com/google/cloud/dataflow/sdk/util/GroupAlsoByWindowViaWindowSetDoFn.java
index f6246d16414d..89a4fcb72022 100644
--- a/sdk/src/main/java/com/google/cloud/dataflow/sdk/util/GroupAlsoByWindowViaWindowSetDoFn.java
+++ b/sdk/src/main/java/com/google/cloud/dataflow/sdk/util/GroupAlsoByWindowViaWindowSetDoFn.java
@@ -80,10 +80,10 @@ public void processElement(ProcessContext c) throws Exception {
             reduceFn,
             c.getPipelineOptions());
 
+    reduceFnRunner.processElements(element.elementsIterable());
     for (TimerData timer : element.timersIterable()) {
       reduceFnRunner.onTimer(timer);
     }
-    reduceFnRunner.processElements(element.elementsIterable());
     reduceFnRunner.persist();
   }