diff --git a/src/metric.cpp b/src/metric.cpp
index 3a870c9..39ce1e8 100644
--- a/src/metric.cpp
+++ b/src/metric.cpp
@@ -1446,10 +1446,9 @@ update_histogram_buckets_simd(std::span<const double> thresholds,
   }
 }
 #elif defined(__aarch64__)
-static void
-update_histogram_buckets_simd(std::span<const double> thresholds,
-                              std::span<uint64_t> counts, double x,
-                              size_t start_idx) {
+static void update_histogram_buckets_simd(std::span<const double> thresholds,
+                                          std::span<uint64_t> counts, double x,
+                                          size_t start_idx) {
   const size_t size = thresholds.size();
   size_t i = start_idx;
 
@@ -1483,7 +1482,7 @@ update_histogram_buckets_simd(std::span<const double> thresholds,
 static void update_histogram_buckets(std::span<const double> thresholds,
                                      std::span<uint64_t> counts, double x,
                                      size_t start_idx) {
-#if defined(__x86_64__) || defined(__amd64__) || defined(_M_X64) || \
+#if defined(__x86_64__) || defined(__amd64__) || defined(_M_X64) ||            \
     defined(__aarch64__)
   update_histogram_buckets_simd(thresholds, counts, x, start_idx);
 #else
@@ -1522,8 +1521,7 @@ void Histogram::observe(double x) {
     p->mutex.unlock();
   } else {
     // Slow path: accumulate in pending (lock-free)
-    update_histogram_buckets(p->thresholds, p->pending.bucket_counts, x,
-                             0);
+    update_histogram_buckets(p->thresholds, p->pending.bucket_counts, x, 0);
     p->pending.sum += x;
     p->pending.observations++;
   }