diff --git a/crates/pacdef_core/src/grouping/section.rs b/crates/pacdef_core/src/grouping/section.rs
index 48aeee4..9478c1e 100644
--- a/crates/pacdef_core/src/grouping/section.rs
+++ b/crates/pacdef_core/src/grouping/section.rs
@@ -75,7 +75,8 @@ impl PartialOrd for Section {
 
 impl Ord for Section {
     fn cmp(&self, other: &Self) -> std::cmp::Ordering {
-        self.partial_cmp(other).unwrap()
+        self.partial_cmp(other)
+            .expect("partial_cmp compares &str, which provide total order")
     }
 }