diff --git a/src/libtess2/Source/sweep.c b/src/libtess2/Source/sweep.c
index 73da9353..a8d8971a 100755
--- a/src/libtess2/Source/sweep.c
+++ b/src/libtess2/Source/sweep.c
@@ -1121,10 +1121,10 @@ static void InitEdgeDict( TESStesselator *tess )
 	w = (tess->bmax[0] - tess->bmin[0]);
 	h = (tess->bmax[1] - tess->bmin[1]);
 
-	smin = tess->bmin[0] - w;
-	smax = tess->bmax[0] + w;
-	tmin = tess->bmin[1] - h;
-	tmax = tess->bmax[1] + h;
+	smin = tess->bmin[0] - w - 0.01;
+	smax = tess->bmax[0] + w + 0.01;
+	tmin = tess->bmin[1] - h - 0.01;
+	tmax = tess->bmax[1] + h + 0.01;
 
 	AddSentinel( tess, smin, smax, tmin );
 	AddSentinel( tess, smin, smax, tmax );
diff --git a/src/libtess2/Source/tess.c b/src/libtess2/Source/tess.c
index fa1639c3..ff8039ed 100755
--- a/src/libtess2/Source/tess.c
+++ b/src/libtess2/Source/tess.c
@@ -70,6 +70,15 @@ static int LongAxis( TESSreal v[3] )
 	return i;
 }
 
+static int ShortAxis( TESSreal v[3] )
+{
+	int i = 0;
+
+	if( ABS(v[1]) < ABS(v[0]) ) { i = 1; }
+	if( ABS(v[2]) < ABS(v[i]) ) { i = 2; }
+	return i;
+}
+
 static void ComputeNormal( TESStesselator *tess, TESSreal norm[3] )
 {
 	TESSvertex *v, *v1, *v2;
@@ -136,7 +145,7 @@ static void ComputeNormal( TESStesselator *tess, TESSreal norm[3] )
 	if( maxLen2 <= 0 ) {
 		/* All points lie on a single line -- any decent normal will do */
 		norm[0] = norm[1] = norm[2] = 0;
-		norm[LongAxis(d1)] = 1;
+		norm[ShortAxis(d1)] = 1;
 	}
 }