diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 7c66f8821..c065cd9c1 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -3592,7 +3592,7 @@ S32 LLVolume::lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
 	if (face == -1) // ALL_SIDES
 	{
 		start_face = 0;
-		end_face = getNumFaces() - 1;
+		end_face = getNumVolumeFaces() - 1;
 	}
 	else
 	{
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index f1603beef..8b9f95362 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -2042,7 +2042,7 @@ BOOL LLVOVolume::lineSegmentIntersect(const LLVector3& start, const LLVector3& e
 		if (face == -1)
 		{
 			start_face = 0;
-			end_face = volume->getNumFaces();
+			end_face = volume->getNumVolumeFaces();
 		}
 		else
 		{