diff --git a/tests/bugs/modalg_5/bug25729 b/tests/bugs/modalg_5/bug25729
index 123cee632b..89b02111c3 100644
--- a/tests/bugs/modalg_5/bug25729
+++ b/tests/bugs/modalg_5/bug25729
@@ -8,7 +8,7 @@ puts ""
 
 restore [locate_data_file bug25729_source_shape.brep] s
 
-offsetparameter 1.e-7 i i
+offsetparameter 1.e-7 c i
 offsetload s 0.14
 offsetperform result