diff --git a/processing/src/test/java/io/druid/segment/incremental/IncrementalIndexStorageAdapterTest.java b/processing/src/test/java/io/druid/segment/incremental/IncrementalIndexStorageAdapterTest.java
index 03e80dcc8b8..e3b603af9ae 100644
--- a/processing/src/test/java/io/druid/segment/incremental/IncrementalIndexStorageAdapterTest.java
+++ b/processing/src/test/java/io/druid/segment/incremental/IncrementalIndexStorageAdapterTest.java
@@ -166,7 +166,7 @@ public class IncrementalIndexStorageAdapterTest
                      .addDimension("billy")
                      .addDimension("sally")
                      .addAggregator(new LongSumAggregatorFactory("cnt", "cnt"))
-                     .setDimFilter(DimFilters.dimEquals("sally", null))
+                     .setDimFilter(DimFilters.dimEquals("sally", (String) null))
                      .build(),
          new IncrementalIndexStorageAdapter(index)
      );