diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 92a507d0c1..913df1cf4b 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -731,7 +731,7 @@
                             "default_value": 2,
                             "minimum_value": "0",
                             "type": "int",
-                            "value": "1 if magic_spiralize else max(1, round((wall_thickness - wall_line_width_0) / wall_line_width_x) + 1)",
+                            "value": "1 if magic_spiralize else max(1, round((wall_thickness - wall_line_width_0) / wall_line_width_x) + 1) if wall_thickness != 0 else 0",
                             "settable_per_mesh": true
                         }
                     }