diff --git a/indra/llcommon/lltracerecording.cpp b/indra/llcommon/lltracerecording.cpp
index 0fd0053240680eefdf12b53bf90658b7f30a30da..95d26f96c0f29c7e1c1fcf54d7d803876f6db070 100644
--- a/indra/llcommon/lltracerecording.cpp
+++ b/indra/llcommon/lltracerecording.cpp
@@ -57,6 +57,7 @@ Recording::Recording(EPlayState state)
 }
 
 Recording::Recording( const Recording& other )
+:	mActiveBuffers(NULL)
 {
 	claim_alloc(gTraceMemStat, this);
 	*this = other;