diff --git a/core/src/main/resources/lib/form/enum.jelly b/core/src/main/resources/lib/form/enum.jelly
index a1bca499ba86..7cbfeb189195 100644
--- a/core/src/main/resources/lib/form/enum.jelly
+++ b/core/src/main/resources/lib/form/enum.jelly
@@ -41,7 +41,7 @@ THE SOFTWARE.
     <j:set target="${attrs}" property="field" value="${entry.field}" />
   </j:if>
   <div class="jenkins-select">
-    <select class="jenkins-select__input" name="${attrs.field}">
+    <select disabled="${readOnlyMode ? 'true' : null}" class="jenkins-select__input" name="${attrs.field}">
       <j:forEach var="it" items="${descriptor.getPropertyType(instance,attrs.field).getEnumConstants()}">
         <f:option value="${it.name()}" selected="${instance[attrs.field]!=null ? it==instance[attrs.field] : it.name()==attrs.default}">
           <d:invokeBody />