diff --git a/indra/newview/llflexibleobject.cpp b/indra/newview/llflexibleobject.cpp
index fc8790c1722f664ce1a7235693a6cf735e6d1adb..aea2de8e92f110366dbc94bccb59b83d2a68630d 100644
--- a/indra/newview/llflexibleobject.cpp
+++ b/indra/newview/llflexibleobject.cpp
@@ -66,6 +66,7 @@ LLVolumeImplFlexible::LLVolumeImplFlexible(LLViewerObject* vo, LLFlexibleObjectD
 	mInitializedRes = -1;
 	mSimulateRes = 0;
 	mFrameNum = 0;
+	mCollisionSphereRadius = 0.f;
 	mRenderRes = 1;
 
 	if(mVO->mDrawable.notNull())