1 files changed, 2 insertions, 2 deletions
diff --git a/src/lib.rs b/src/lib.rs
index ffd8235..268496f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -642,7 +642,7 @@ impl Parser {
 				}
 			}
 		}
-		items.sort_by(|(k1, _), (k2, _)| k1.cmp(k2));
+		items.sort_unstable_by(|(k1, _), (k2, _)| k1.cmp(k2));
 		for window in items.windows(2) {
 			if window[0].0 == window[1].0 {
 				// duplicate key
@@ -906,7 +906,7 @@ impl Configuration {
 			}
 		}
 		if must_sort {
-			self.items.sort_by(|(k1, _), (k2, _)| k1.cmp(k2));
+			self.items.sort_unstable_by(|(k1, _), (k2, _)| k1.cmp(k2));
 		}
 	}