--- a/launchers/VirtualPackageAlternativeIdentifier.launch
+++ b/launchers/VirtualPackageAlternativeIdentifier.launch
@@ -7,6 +7,8 @@
<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
<listEntry value="1"/>
</listAttribute>
+<stringAttribute key="org.eclipse.jdt.launching.CLASSPATH_PROVIDER" value="org.eclipse.m2e.launchconfig.classpathProvider"/>
<stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value="net.timbusproject.dpes.alternative.kb.VirtualPackageAlternativeIdentifier"/>
<stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="PreservationIdentifier-PackageKnowledgeBase-Gen"/>
+<stringAttribute key="org.eclipse.jdt.launching.SOURCE_PATH_PROVIDER" value="org.eclipse.m2e.launchconfig.sourcepathProvider"/>
</launchConfiguration>