diff --git a/releng.wtpbuilder/build.properties b/releng.wtpbuilder/build.properties
index aae15f4d52cbbad3e62195ae9c439f2b9ea014a5..fbe9a5bda66b48f0d6e855902ad4ea0abf4ed834 100644
--- a/releng.wtpbuilder/build.properties
+++ b/releng.wtpbuilder/build.properties
@@ -86,7 +86,7 @@ eclipse.builder=org.eclipse.releng.basebuilder
 #eclipse.builder.version=r311_vM20050914-1235
 #eclipse.builder.version=vI20051215-1506
 #eclipse.builder.version=vI20060210-1640
-eclipse.builder.version=M1_33
+eclipse.builder.version=r321_v20060824
 eclipse.builder.fetch=true