1 files changed, 1 insertions, 0 deletions
diff --git a/src/cell.h b/src/cell.h
index a4d32bf8..d3edb503 100644
--- a/src/cell.h
+++ b/src/cell.h
@@ -76,6 +76,7 @@ extern double resolution(UnitCell *cell,
 extern void cell_print(UnitCell *cell);
 
 extern UnitCell *match_cell(UnitCell *cell, UnitCell *template, int verbose);
+extern int cells_similar(UnitCell *c1, UnitCell *c2);
 
 extern UnitCell *load_cell_from_pdb(const char *filename);