diff --git a/releng/org.eclipse.uml2.releng.buckminster/uml2-build.properties b/releng/org.eclipse.uml2.releng.buckminster/uml2-build.properties
index b20580b..6b9bc90 100755
--- a/releng/org.eclipse.uml2.releng.buckminster/uml2-build.properties
+++ b/releng/org.eclipse.uml2.releng.buckminster/uml2-build.properties
@@ -5,7 +5,7 @@
 buckminster.temp.root=${workspace.root}/buckminster.build.temp
 
 # define the qualifier replacement method
-qualifier.replacement.*=generator:lastModified
+qualifier.replacement.*=generator:buildTimestamp
 generator.lastModified.format='v'yyyyMMdd-HHmm
 
 target.os=*