diff --git a/karaf/assembly/src/main/filtered-resources/etc/config.properties b/karaf/assembly/src/main/filtered-resources/etc/config.properties
index 623bba3..fd83a3f 100644
--- a/karaf/assembly/src/main/filtered-resources/etc/config.properties
+++ b/karaf/assembly/src/main/filtered-resources/etc/config.properties
@@ -47,6 +47,9 @@
 # javax.transaction is needed to avoid class loader constraint violation when using javax.sql  
 org.osgi.framework.bootdelegation=sun.*,com.sun.*,javax.transaction,javax.transaction.*
 
+# OSGi Execution Environment
+org.osgi.framework.executionenvironment=J2SE-1.5
+
 # To enable the use of the startup.properties file to control the start level:
 karaf.auto.start=startup.properties
 #felix.auto.start=all