diff --git a/org.eclipse.wtp.releng.webupdatesite/build.properties b/org.eclipse.wtp.releng.webupdatesite/build.properties
index b5e3b75..3c243bc 100644
--- a/org.eclipse.wtp.releng.webupdatesite/build.properties
+++ b/org.eclipse.wtp.releng.webupdatesite/build.properties
@@ -2,3 +2,5 @@
 bin.includes = META-INF/,\
                .,\
                plugin.properties
+jre.compilation.profile = J2SE-1.5
+output.. = bin/