diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index b5dda23828..de27636c33 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -703,7 +703,7 @@ bool LLVertexBuffer::validateRange(U32 start, U32 end, U32 count, U32 indices_of
 
         for (U32 i = start; i <= end; ++i)
         {
-            if (!v->isFinite3())
+            if (!v[i].isFinite3())
             {
                 LL_ERRS() << "Non-finite vertex position data detected." << LL_ENDL;
             }