diff --git a/src/main/java/jenkins/model/JenkinsAdaptor.java b/src/main/java/jenkins/model/JenkinsAdaptor.java
index efe14b9cb..48c5bca77 100644
--- a/src/main/java/jenkins/model/JenkinsAdaptor.java
+++ b/src/main/java/jenkins/model/JenkinsAdaptor.java
@@ -1,8 +1,9 @@
 package jenkins.model;
 
 /**
- * Access the package protected quiet period
+ * @deprecated use {@link Jenkins#setQuietPeriod}
  */
+@Deprecated
 public class JenkinsAdaptor {
     public static void setQuietPeriod(Jenkins jenkins, int quietPeriod) {
         jenkins.quietPeriod = quietPeriod;
diff --git a/src/main/java/org/jvnet/hudson/test/JenkinsRule.java b/src/main/java/org/jvnet/hudson/test/JenkinsRule.java
index 7a55f4f5b..5233f0869 100644
--- a/src/main/java/org/jvnet/hudson/test/JenkinsRule.java
+++ b/src/main/java/org/jvnet/hudson/test/JenkinsRule.java
@@ -1888,6 +1888,10 @@ public void assertEqualBeans(Object lhs, Object rhs, String properties) throws I
         }
     }
 
+    /**
+     * @deprecated use {@link Jenkins#setQuietPeriod}
+     */
+    @Deprecated
     public void setQuietPeriod(int qp) {
         JenkinsAdaptor.setQuietPeriod(jenkins, qp);
     }