diff --git a/day_07/src/equation/operator_set.rs b/day_07/src/equation/operator_set.rs
index 1b8af5b..307af72 100644
--- a/day_07/src/equation/operator_set.rs
+++ b/day_07/src/equation/operator_set.rs
@@ -60,11 +60,12 @@ fn create_permutations_recurse(
 }
 
 pub fn create_permutations(set: HashSet<Op>, len: usize) -> HashSet<Vec<Op>> {
-    if let Some(cached_value) = check_operator_set_cache(&PermutationCacheKey::new(len, &set)) {
+    let cache_key = PermutationCacheKey::new(len, &set);
+    if let Some(cached_value) = check_operator_set_cache(&cache_key) {
         return cached_value;
     }
     let mut permutations = HashSet::new();
     create_permutations_recurse(&set, len, &mut permutations, vec![]);
-    store_operator_set_in_cache(PermutationCacheKey::new(len, &set), permutations.clone());
+    store_operator_set_in_cache(cache_key, permutations.clone());
     permutations
 }