diff --git a/spring-session-core/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java b/spring-session-core/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
index 0d7630024..d7844a883 100644
--- a/spring-session-core/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
+++ b/spring-session-core/src/main/java/org/springframework/session/web/http/DefaultCookieSerializer.java
@@ -296,7 +296,7 @@ private boolean isSecureCookie(HttpServletRequest request) {
 	 * @param cookiePath the path of the Cookie. If null, the default of the context path
 	 * will be used.
 	 */
-	public void setCookiePath(String cookiePath) {
+	public void setCookiePath(@Nullable String cookiePath) {
 		this.cookiePath = cookiePath;
 	}