--- a/metric-providers/org.ossmeter.metricprovider.downloadcounter.sourceforge/META-INF/MANIFEST.MF
+++ b/metric-providers/org.ossmeter.metricprovider.downloadcounter.sourceforge/META-INF/MANIFEST.MF
@@ -1,7 +1,7 @@
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: DownloadCounter
-Bundle-SymbolicName: org.ossmeter.metricprovider.downloadcounter.sourceforge
+Bundle-SymbolicName: org.ossmeter.metricprovider.downloadcounter.sourceforge;singleton:=true
Bundle-Version: 1.0.0.qualifier
Bundle-Activator: org.ossmeter.metricprovider.downloadcounter.sourceforge.Activator
Require-Bundle: org.eclipse.ui,