diff --git a/spring-core/src/main/java/org/springframework/util/MultiValueMap.java b/spring-core/src/main/java/org/springframework/util/MultiValueMap.java
index f0071f062e8..ef486ae963b 100644
--- a/spring-core/src/main/java/org/springframework/util/MultiValueMap.java
+++ b/spring-core/src/main/java/org/springframework/util/MultiValueMap.java
@@ -81,14 +81,14 @@ public interface MultiValueMap<K, V extends @Nullable Object> extends Map<K, Lis
 	void set(K key, @Nullable V value);
 
 	/**
-	 * Set the given values under.
-	 * @param values the values.
+	 * Set the given values in this {@code MultiValueMap}.
+	 * @param values the values
 	 */
 	void setAll(Map<K, V> values);
 
 	/**
 	 * Return a {@code Map} with the first values contained in this {@code MultiValueMap}.
-	 * The difference between this method and {@link #asSingleValueMap()} is
+	 * <p>The difference between this method and {@link #asSingleValueMap()} is
 	 * that this method returns a copy of the entries of this map, whereas
 	 * the latter returns a view.
 	 * @return a single value representation of this map
diff --git a/spring-web/src/main/java/org/springframework/http/HttpHeaders.java b/spring-web/src/main/java/org/springframework/http/HttpHeaders.java
index 581729453da..ed1a6a14f35 100644
--- a/spring-web/src/main/java/org/springframework/http/HttpHeaders.java
+++ b/spring-web/src/main/java/org/springframework/http/HttpHeaders.java
@@ -1798,7 +1798,7 @@ public class HttpHeaders implements Serializable {
 	}
 
 	/**
-	 * Add all the values of the given {@code HttpHeaders} to the current header.
+	 * Add all name-value pairs of the given {@code HttpHeaders}.
 	 * <p>As values are represented as a {@code List}, duplicate values can be
 	 * introduced. See {@link #putAll(HttpHeaders)} to replace the list of
 	 * values of each individual header name instead.
@@ -1823,8 +1823,8 @@ public class HttpHeaders implements Serializable {
 	}
 
 	/**
-	 * Set all single header value from the given Map under each of their
-	 * corresponding name.
+	 * Set all single header values from the given Map under each of their
+	 * corresponding names.
 	 * @param values the name-single-value pairs
 	 * @see #putAll(Map)
 	 */
@@ -1973,8 +1973,7 @@ public class HttpHeaders implements Serializable {
 	}
 
 	/**
-	 * Put all the entries from the given {@code MultiValueMap} into this
-	 * HttpHeaders.
+	 * Put all the entries from the given {@code Map} into this HttpHeaders.
 	 * @param headers the given headers
 	 * @see #put(String, List)
 	 */
@@ -2014,7 +2013,7 @@ public class HttpHeaders implements Serializable {
 	 * @param action the action to be performed for each entry
 	 */
 	public void forEach(BiConsumer<? super String, ? super List<String>> action) {
-		this.headerSet().forEach(e -> action.accept(e.getKey(), e.getValue()));
+		headerSet().forEach(e -> action.accept(e.getKey(), e.getValue()));
 	}
 
 	/**