diff --git a/processing/src/main/java/io/druid/segment/data/BitmapSerdeFactory.java b/processing/src/main/java/io/druid/segment/data/BitmapSerdeFactory.java
index b82201a3548..09db6f5fff0 100644
--- a/processing/src/main/java/io/druid/segment/data/BitmapSerdeFactory.java
+++ b/processing/src/main/java/io/druid/segment/data/BitmapSerdeFactory.java
@@ -26,7 +26,7 @@ import com.metamx.collections.bitmap.ImmutableBitmap;
 
 /**
  */
-@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
+@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type", defaultImpl = ConciseBitmapSerdeFactory.class)
 @JsonSubTypes(value = {
     @JsonSubTypes.Type(name = "concise", value = ConciseBitmapSerdeFactory.class),
     @JsonSubTypes.Type(name = "roaring", value = RoaringBitmapSerdeFactory.class)