diff --git a/pyaedt/modeler/cad/Primitives.py b/pyaedt/modeler/cad/Primitives.py
index 60eda8d93a9..4bfbd707212 100644
--- a/pyaedt/modeler/cad/Primitives.py
+++ b/pyaedt/modeler/cad/Primitives.py
@@ -1126,7 +1126,7 @@ def _find_perpendicular_points(self, face):
 
     @pyaedt_function_handler()
     def cover_lines(self, selection):
-        """Cover closed lines and transform them to a sheet
+        """Cover closed lines and transform them to a sheet.
 
         Parameters
         ----------