diff --git a/core/src/main/java/jenkins/model/experimentalflags/RemoveYuiUserExperimentalFlag.java b/core/src/main/java/jenkins/model/experimentalflags/RemoveYuiUserExperimentalFlag.java
index e8f8dcc31775..5f8620862fce 100644
--- a/core/src/main/java/jenkins/model/experimentalflags/RemoveYuiUserExperimentalFlag.java
+++ b/core/src/main/java/jenkins/model/experimentalflags/RemoveYuiUserExperimentalFlag.java
@@ -24,6 +24,7 @@
 
 package jenkins.model.experimentalflags;
 
+import edu.umd.cs.findbugs.annotations.NonNull;
 import edu.umd.cs.findbugs.annotations.Nullable;
 import hudson.Extension;
 import org.kohsuke.accmod.Restricted;
@@ -46,4 +47,10 @@ public String getDisplayName() {
     public String getShortDescription() {
         return "Remove YUI from all Jenkins UI pages. This will break anything that depends on YUI";
     }
+
+    @NonNull
+    @Override
+    public Boolean getDefaultValue() {
+        return true;
+    }
 }