diff --git a/src/main/java/com/cwctravel/hudson/plugins/extended_choice_parameter/ExtendedChoiceParameterDefinition.java b/src/main/java/com/cwctravel/hudson/plugins/extended_choice_parameter/ExtendedChoiceParameterDefinition.java
index 81976e9d..a91a1e79 100644
--- a/src/main/java/com/cwctravel/hudson/plugins/extended_choice_parameter/ExtendedChoiceParameterDefinition.java
+++ b/src/main/java/com/cwctravel/hudson/plugins/extended_choice_parameter/ExtendedChoiceParameterDefinition.java
@@ -54,6 +54,7 @@
 import org.jenkinsci.plugins.scriptsecurity.scripts.UnapprovedClasspathException;
 import org.jenkinsci.plugins.scriptsecurity.scripts.UnapprovedUsageException;
 import org.jenkinsci.plugins.scriptsecurity.scripts.languages.GroovyLanguage;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.Stapler;
@@ -106,7 +107,7 @@ public class ExtendedChoiceParameterDefinition extends ParameterDefinition {
 
 	private transient GroovyShell groovyShell;
 
-	@Extension
+	@Extension @Symbol({"extendedChoice"})
 	public static class DescriptorImpl extends ParameterDescriptor {
 		@Override
 		public String getDisplayName() {