diff --git a/src/main/org/apache/tools/ant/taskdefs/defaults.properties b/src/main/org/apache/tools/ant/taskdefs/defaults.properties
index 0efc18b15..20ef94d56 100644
--- a/src/main/org/apache/tools/ant/taskdefs/defaults.properties
+++ b/src/main/org/apache/tools/ant/taskdefs/defaults.properties
@@ -170,6 +170,7 @@ jarlib-manifest=org.apache.tools.ant.taskdefs.optional.extension.JarLibManifestT
 jarlib-available=org.apache.tools.ant.taskdefs.optional.extension.JarLibAvailableTask
 jarlib-resolve=org.apache.tools.ant.taskdefs.optional.extension.JarLibResolveTask
 setproxy=org.apache.tools.ant.taskdefs.optional.net.SetProxy
+vbc=org.apache.tools.ant.taskdefs.optional.dotnet.VisualBasicCompile
 
 # deprecated ant tasks (kept for back compatibility)
 starteam=org.apache.tools.ant.taskdefs.optional.scm.AntStarTeamCheckOut