diff --git a/crates/utils/src/interval_map/tests.rs b/crates/utils/src/interval_map/tests.rs
index b416ac898..bd159cfff 100644
--- a/crates/utils/src/interval_map/tests.rs
+++ b/crates/utils/src/interval_map/tests.rs
@@ -98,12 +98,12 @@ impl<V> IntervalMap<i32, V> {
     }
 }
 
-fn with_map_and_generator<V>(test_fn: impl FnOnce(IntervalMap<i32, V>, IntervalGenerator) + Clone) {
+fn with_map_and_generator<V>(test_fn: impl Fn(IntervalMap<i32, V>, IntervalGenerator)) {
     let seeds = vec![[0; 32], [1; 32], [2; 32]];
     for seed in seeds {
         let gen = IntervalGenerator::new(seed);
         let map = IntervalMap::new();
-        test_fn.clone()(map, gen);
+        test_fn(map, gen);
     }
 }