diff --git a/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
index 6e24ef823..4c955b01a 100644
--- a/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
@@ -5,7 +5,7 @@ Bundle-Name: %plugin_name
 Bundle-SymbolicName: org.eclipse.jgit.ant.test
 Bundle-Version: 2.3.0.qualifier
 Bundle-ActivationPolicy: lazy
-Bundle-RequiredExecutionEnvironment: JavaSE-1.6
+Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Import-Package: org.apache.tools.ant,
  org.apache.tools.ant.types,
  org.eclipse.jgit.ant.tasks;version="2.3.0",