diff --git a/lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Vector.java b/lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Vector.java
index 5209df8fb96..62b3f5ed4a1 100755
--- a/lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Vector.java
+++ b/lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Vector.java
@@ -106,10 +106,9 @@ public class Vector {
     final double thisZ = AX * BY - AY * BX;
     
     final double magnitude = magnitude(thisX, thisY, thisZ);
-    if (magnitude < MINIMUM_RESOLUTION) {
+    if (magnitude == 0.0) {
       throw new IllegalArgumentException("Degenerate/parallel vector constructed");
     }
-    
     final double inverseMagnitude = 1.0/magnitude;
     
     double normalizeX = thisX * inverseMagnitude;
@@ -215,7 +214,7 @@ public class Vector {
     final double thisZ = A.x * B.y - A.y * B.x;
     
     final double magnitude = magnitude(thisX, thisY, thisZ);
-    if (magnitude < MINIMUM_RESOLUTION) {
+    if (magnitude == 0.0) {
       return true;
     }
     
diff --git a/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java b/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java
index 8c94c9c5154..d7828bddceb 100644
--- a/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java
+++ b/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java
@@ -52,7 +52,6 @@ public class RandomPlaneTest extends RandomGeo3dShapeGenerator {
     }
   }
   
-  @Ignore
   @Test
   @Repeat(iterations = 10)
   public void testPlaneThreePointsAccuracy() {