diff --git a/code/renderergl1/tr_curve.c b/code/renderergl1/tr_curve.c
index 40537eac..eaabba46 100644
--- a/code/renderergl1/tr_curve.c
+++ b/code/renderergl1/tr_curve.c
@@ -182,7 +182,7 @@ static	int	neighbors[8][2] = {
 						break;					// edge of patch
 					}
 					VectorSubtract( ctrl[y][x].xyz, base, temp );
-					if ( VectorNormalize2( temp, temp ) == 0 ) {
+					if ( VectorNormalize( temp ) < 0.001f ) {
 						continue;				// degenerate edge, get more dist
 					} else {
 						good[k] = qtrue;
@@ -198,7 +198,7 @@ static	int	neighbors[8][2] = {
 					continue;	// didn't get two points
 				}
 				CrossProduct( around[(k+1)&7], around[k], normal );
-				if ( VectorNormalize2( normal, normal ) == 0 ) {
+				if ( VectorNormalize( normal ) < 0.001f ) {
 					continue;
 				}
 				VectorAdd( normal, sum, sum );
diff --git a/code/renderergl2/tr_curve.c b/code/renderergl2/tr_curve.c
index 1d7e99e8..d175789b 100644
--- a/code/renderergl2/tr_curve.c
+++ b/code/renderergl2/tr_curve.c
@@ -182,7 +182,7 @@ static	int	neighbors[8][2] = {
 						break;					// edge of patch
 					}
 					VectorSubtract( ctrl[y][x].xyz, base, temp );
-					if ( VectorNormalize2( temp, temp ) == 0 ) {
+					if ( VectorNormalize( temp ) < 0.001f ) {
 						continue;				// degenerate edge, get more dist
 					} else {
 						good[k] = qtrue;
@@ -198,7 +198,7 @@ static	int	neighbors[8][2] = {
 					continue;	// didn't get two points
 				}
 				CrossProduct( around[(k+1)&7], around[k], normal );
-				if ( VectorNormalize2( normal, normal ) == 0 ) {
+				if ( VectorNormalize( normal ) < 0.001f ) {
 					continue;
 				}
 				VectorAdd( normal, sum, sum );