diff --git a/core/src/main/java/com/linecorp/armeria/server/annotation/Attribute.java b/core/src/main/java/com/linecorp/armeria/server/annotation/Attribute.java
index 6862a295755..a862df59ee3 100644
--- a/core/src/main/java/com/linecorp/armeria/server/annotation/Attribute.java
+++ b/core/src/main/java/com/linecorp/armeria/server/annotation/Attribute.java
@@ -26,7 +26,8 @@
 import io.netty.util.AttributeKey;
 
 /**
- * Annotation for mapping an attribute of the given {@link AttributeKey}, retrieved from a {@link RequestContext}, onto the following elements.
+ * Annotation for mapping an attribute of the given {@link AttributeKey}, retrieved
+ * from a {@link RequestContext}, onto the following elements.
  */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.PARAMETER)
@@ -39,8 +40,8 @@
     String value();
 
     /**
-     * The class of the {@link AttributeKey} to bind to.
-     * If you created an {@link AttributeKey} with {@code AttributeKey.valueOf(MyAttributeKeys.class, "INT_ATTR")},
+     * The class of the {@link AttributeKey} to bind to. If you created an {@link AttributeKey} with
+     * {@code AttributeKey.valueOf(MyAttributeKeys.class, "INT_ATTR")},
      * the {@link #prefix} should be {@code MyAttributeKeys.class}.
      * See <a href="https://armeria.dev/docs/advanced-custom-attributes/">advanced-customer-attributes</a>.
      */
diff --git a/core/src/test/java/com/linecorp/armeria/internal/server/annotation/AnnotatedValueResolverTest.java b/core/src/test/java/com/linecorp/armeria/internal/server/annotation/AnnotatedValueResolverTest.java
index 7b3ec7de0ce..e0128493b38 100644
--- a/core/src/test/java/com/linecorp/armeria/internal/server/annotation/AnnotatedValueResolverTest.java
+++ b/core/src/test/java/com/linecorp/armeria/internal/server/annotation/AnnotatedValueResolverTest.java
@@ -39,7 +39,6 @@
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;