diff --git a/crates/fj-core/src/validate/shell.rs b/crates/fj-core/src/validate/shell.rs
index 176ba2ccd..b67d20c52 100644
--- a/crates/fj-core/src/validate/shell.rs
+++ b/crates/fj-core/src/validate/shell.rs
@@ -35,10 +35,7 @@ impl Validate for Shell {
 #[derive(Clone, Debug, thiserror::Error)]
 pub enum ShellValidationError {
     /// [`Shell`] contains curves whose coordinate systems don't match
-    #[error(
-        "Curve coordinate system mismatch: {:#?}",
-        .0
-    )]
+    #[error("Curve coordinate system mismatch: {:#?}", .0)]
     CurveCoordinateSystemMismatch(CurveGeometryMismatch),
 
     /// [`Shell`] contains a half-edge that is not part of a pair