diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp
index 74bbcd793..fa39a3789 100644
--- a/indra/llprimitive/llmodel.cpp
+++ b/indra/llprimitive/llmodel.cpp
@@ -1132,9 +1132,7 @@ bool LLModel::loadModel(std::istream& is)
 		"physics_mesh",
 	}};
 
-	const S32 MODEL_LODS = lod_name.size();
-
-	S32 lod = llclamp((S32) mDetail, 0, MODEL_LODS);
+	S32 lod = llclamp((S32) mDetail, 0, (S32)lod_name.size() - 1);
 
 	if (header[lod_name[lod]]["offset"].asInteger() == -1 || 
 		header[lod_name[lod]]["size"].asInteger() == 0 )