diff --git a/src/mol-model/structure/structure/unit/bonds/inter-compute.ts b/src/mol-model/structure/structure/unit/bonds/inter-compute.ts
index c09a2da13b76b0b85f3dbf7f519286d729e96566..69f51afb6240cc719a83338a62fda29a821b91a0 100644
--- a/src/mol-model/structure/structure/unit/bonds/inter-compute.ts
+++ b/src/mol-model/structure/structure/unit/bonds/inter-compute.ts
@@ -20,7 +20,6 @@ import { InterUnitGraph } from '../../../../../mol-math/graph/inter-unit-graph';
 import { StructConn } from '../../../../../mol-model-formats/structure/property/bonds/struct_conn';
 import { equalEps } from '../../../../../mol-math/linear-algebra/3d/common';
 import { Model } from '../../../model';
-import { StructureProperties } from '../../properties';
 
 // avoiding namespace lookup improved performance in Chrome (Aug 2020)
 const v3distance = Vec3.distance;