diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 7751ef87ee5317e1dc3eaf764a543af6e9c813c2..317d15f84e3e792ba08943d3dcbc3e12d40685d7 100755
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -5604,16 +5604,16 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 	LLVector4a binormal;
 	calc_binormal_from_triangle(binormal,
 		*mCenter, cuv,
-		pos[0], tc[0],
-		pos[1], tc[1]);
+		mPositions[0], mTexCoords[0],
+		mPositions[1], mTexCoords[1]);
 	binormal.normalize3fast();
 
 	LLVector4a normal;
 	LLVector4a d0, d1;
 	
 
-	d0.setSub(*mCenter, pos[0]);
-	d1.setSub(*mCenter, pos[1]);
+	d0.setSub(*mCenter, mPositions[0]);
+	d1.setSub(*mCenter, mPositions[1]);
 
 	if (mTypeMask & TOP_MASK)
 	{