diff --git a/index.html b/index.html
index d5e457ea4f9d32a33ef36291c30941c297837374..dd123f4ef9bd8e3da5782c24e19f179edd20c844 100644
--- a/index.html
+++ b/index.html
@@ -167,7 +167,7 @@
                 vec3 deltaP = neighborLastPosition-lastPosition+nominalDist;
                 float deltaPLength = length(deltaP);
                 deltaP -= deltaP*(beamMeta[2]/deltaPLength);
-                nodeError += deltaPLength/length(nominalDist);
+                nodeError += abs(deltaPLength/length(nominalDist) - 1.0);
                 vec3 deltaV = neighborLastVelocity-lastVelocity;
 
                 vec3 _force = deltaP*beamMeta[0] + deltaV*beamMeta[1];