diff --git a/app-proto/inversive-display/src/inversive.frag b/app-proto/inversive-display/src/inversive.frag
index c469edc..213fbe2 100644
--- a/app-proto/inversive-display/src/inversive.frag
+++ b/app-proto/inversive-display/src/inversive.frag
@@ -136,7 +136,6 @@ void main() {
     
     // cast rays through the spheres
     const int SPHERE_MAX_INTERNAL = 6;
-    vec2 depth_pairs [SPHERE_MAX_INTERNAL];
     taggedFrag frags [2*SPHERE_MAX_INTERNAL];
     int layer_cnt = 0;
     for (int id = 0; id < sphere_cnt; ++id) {