diff --git a/src/mol-model/structure/model/properties/utils/secondary-structure.ts b/src/mol-model/structure/model/properties/utils/secondary-structure.ts
index 345f352937ad6ab9698ece6bb10b0d497d05ea9b..bcd5f07d3dd50a4bad3dd0ca0a8dce0b16d1b4ca 100644
--- a/src/mol-model/structure/model/properties/utils/secondary-structure.ts
+++ b/src/mol-model/structure/model/properties/utils/secondary-structure.ts
@@ -14,7 +14,6 @@ import { IntAdjacencyGraph } from 'mol-math/graph';
 import { BitFlags } from 'mol-util';
 import { ElementIndex } from 'mol-model/structure/model/indexing';
 import { AtomicHierarchy, AtomicConformation } from '../atomic';
-import { Float } from 'servers/volume/common/binary-schema';
 
 /**
  * TODO bugs to fix: