diff --git a/.hgtags b/.hgtags
index efd43031a0..48c6ed107a 100755
--- a/.hgtags
+++ b/.hgtags
@@ -334,3 +334,5 @@ fba99f381b8d4ad1b7b42fa4993b29998d95be18 DRTVWR-179
 524da902713e8b60322640b9825101add4a7c497 3.4.1-beta7
 173c2809f9873499c4b9d6bc044ec941c954d3fb DRTVWR-228
 1dc94555582f52718834081e7659e973ae4521f7 3.4.1-beta8
+52c164c8023a5e65f3dc1b0bbb7fa1dd0c631b6b DRTVWR-231
+9c4519aa5c70f7560111fb5c740d3a7dc20a845a 3.4.1-beta9
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index e324d60fec..678898797f 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -706,6 +706,8 @@ void LLPipeline::cleanup()
 	mInitialized = FALSE;
 
 	mDeferredVB = NULL;
+
+	mCubeVB = NULL;
 }
 
 //============================================================================