diff --git a/modules/core/src/main/scala/com/github/tarao/record4s/ArrayRecord.scala b/modules/core/src/main/scala/com/github/tarao/record4s/ArrayRecord.scala
index d4bfbe1..d686927 100644
--- a/modules/core/src/main/scala/com/github/tarao/record4s/ArrayRecord.scala
+++ b/modules/core/src/main/scala/com/github/tarao/record4s/ArrayRecord.scala
@@ -112,7 +112,7 @@ object ProductRecord {
   *   - Field access is faster (constant time)
   *   - Creation is faster
   *   - Update time grows significantly when record size grows
-  *   - Compilation is bit slower
+  *   - Compilation is a bit slower
   *   - No implicit upcast
   *
   * Example