diff --git a/src/day7.cpp b/src/day7.cpp
index e87b055..26a1628 100644
--- a/src/day7.cpp
+++ b/src/day7.cpp
@@ -47,7 +47,7 @@ Location find_start(const Grid &grid) {
 
 uint64_t part_1(const Grid &grid) {
   uint64_t ans{0};
-  Location start = find_start(grid);
+  Location start{find_start(grid)};
   const auto [start_row, start_col]{start};
   std::set<size_t> cols{};
   cols.insert(start_col);
@@ -69,7 +69,7 @@ uint64_t part_1(const Grid &grid) {
 
 void insert_or_increment(std::map<size_t, uint64_t> &cols, size_t col,
                          uint64_t value) {
-  auto iter = cols.find(col);
+  auto iter{cols.find(col)};
   if (iter == cols.end()) {
     cols.insert({col, value});
   } else {