diff --git a/src/fgt/filter_shape/filter_shape.h b/src/fgt/filter_shape/filter_shape.h
index 0aa9e4aa2..6f65d4cfc 100644
--- a/src/fgt/filter_shape/filter_shape.h
+++ b/src/fgt/filter_shape/filter_shape.h
@@ -40,7 +40,7 @@ class FilterSolidShapes : public QObject, public MeshFilterInterface
 public:
     enum { FSS_TEXT };
     enum { CR_TETRAHEDRON, CR_HEXAHEDRON, CR_OCTAHEDRON, CR_DODECAHEDRON, CR_ICOSAHEDRON,
-           CR_TT, CR_COH, CR_TC, CR_TO, CR_RCOH};
+           CR_TT, CR_COH, CR_TC, CR_TO, CR_RCOH, CR_TIS};
 
     FilterSolidShapes();
     ~FilterSolidShapes(){};