diff --git a/grails.org/grails-app/services/org/grails/plugin/PluginService.groovy b/grails.org/grails-app/services/org/grails/plugin/PluginService.groovy
index 12d7394..35d385e 100644
--- a/grails.org/grails-app/services/org/grails/plugin/PluginService.groovy
+++ b/grails.org/grails-app/services/org/grails/plugin/PluginService.groovy
@@ -175,6 +175,11 @@ class PluginService {
                         }
                         // give an initial release date of now
                         master.lastReleased = new Date()
+						if(!master.groupId) {
+							master.groupId = "org.grails.plugins"
+						}
+                       // so we need to save the master first to get its id
+
                         // save new master plugin
                         if (!master.save()) {
                             log.error "Could not save master plugin: $master.name ($master.title), version $master.currentRelease"