diff --git a/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/guice/MSQIndexingModule.java b/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/guice/MSQIndexingModule.java
index 01a8743dd86..4e28edc3ac1 100644
--- a/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/guice/MSQIndexingModule.java
+++ b/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/guice/MSQIndexingModule.java
@@ -60,6 +60,7 @@ import org.apache.druid.msq.indexing.error.TooManyClusteredByColumnsFault;
 import org.apache.druid.msq.indexing.error.TooManyColumnsFault;
 import org.apache.druid.msq.indexing.error.TooManyInputFilesFault;
 import org.apache.druid.msq.indexing.error.TooManyPartitionsFault;
+import org.apache.druid.msq.indexing.error.TooManyRowsInAWindowFault;
 import org.apache.druid.msq.indexing.error.TooManyRowsWithSameKeyFault;
 import org.apache.druid.msq.indexing.error.TooManySegmentsInTimeChunkFault;
 import org.apache.druid.msq.indexing.error.TooManyWarningsFault;
@@ -128,6 +129,7 @@ public class MSQIndexingModule implements DruidModule
       TooManyColumnsFault.class,
       TooManyInputFilesFault.class,
       TooManyPartitionsFault.class,
+      TooManyRowsInAWindowFault.class,
       TooManyRowsWithSameKeyFault.class,
       TooManySegmentsInTimeChunkFault.class,
       TooManyWarningsFault.class,
diff --git a/extensions-core/multi-stage-query/src/test/java/org/apache/druid/msq/indexing/error/MSQFaultSerdeTest.java b/extensions-core/multi-stage-query/src/test/java/org/apache/druid/msq/indexing/error/MSQFaultSerdeTest.java
index cffc0f78a49..0c16ae08af5 100644
--- a/extensions-core/multi-stage-query/src/test/java/org/apache/druid/msq/indexing/error/MSQFaultSerdeTest.java
+++ b/extensions-core/multi-stage-query/src/test/java/org/apache/druid/msq/indexing/error/MSQFaultSerdeTest.java
@@ -85,6 +85,7 @@ public class MSQFaultSerdeTest
     assertFaultSerde(new TooManyClusteredByColumnsFault(10, 8, 1));
     assertFaultSerde(new TooManyInputFilesFault(15, 10, 5));
     assertFaultSerde(new TooManyPartitionsFault(10));
+    assertFaultSerde(new TooManyRowsInAWindowFault(10, 20));
     assertFaultSerde(new TooManyRowsWithSameKeyFault(Arrays.asList("foo", 123), 1, 2));
     assertFaultSerde(new TooManySegmentsInTimeChunkFault(DateTimes.nowUtc(), 10, 1, Granularities.ALL));
     assertFaultSerde(new TooManyWarningsFault(10, "the error"));