diff --git a/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/.ratings b/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/.ratings
index ca1e97b9dd5f4c8f49d64f3ff10572cc2ec90cc5..224b98f86e39ac7e6e0de7b8c464f19f2f2625f1 100644
--- a/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/.ratings
+++ b/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/.ratings
@@ -1,3 +1,3 @@
 ApplicationActionBarAdvisor.java 881198ff05ab14110efef1673f0914725348442b GREEN
-ApplicationWorkbenchAdvisor.java 130a7b352ee182ad5d3703fac3478942cc0e8608 GREEN
+ApplicationWorkbenchAdvisor.java 19af4bc3262680a283eccccf92c4e2ae4463fa71 YELLOW
 ApplicationWorkbenchWindowAdvisor.java da5cb38300b384579532c678fbc9faa961c2ca6b GREEN
diff --git a/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/ApplicationWorkbenchAdvisor.java b/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/ApplicationWorkbenchAdvisor.java
index 130a7b352ee182ad5d3703fac3478942cc0e8608..19af4bc3262680a283eccccf92c4e2ae4463fa71 100644
--- a/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/ApplicationWorkbenchAdvisor.java
+++ b/org.fortiss.af3.rcp.application/src/org/fortiss/af3/rcp/application/advisors/ApplicationWorkbenchAdvisor.java
@@ -29,7 +29,7 @@ import org.fortiss.af3.allocation.IAllocationService;
 import org.fortiss.af3.exploration.service.IDSEBackendService;
 import org.fortiss.af3.exploration.smt.backend.Z3Backend;
 import org.fortiss.af3.exploration.ui.AF3ExplorationUIActivator;
-import org.fortiss.af3.exploration.ui.perspective.service.IExternalDSEExtensionService;
+import org.fortiss.af3.exploration.ui.perspective.service.IDSEUIPatternExtensionService;
 import org.fortiss.af3.project.AF3Project;
 import org.fortiss.af3.timing.ITimingSpecificationService;
 import org.fortiss.tooling.base.ToolingBase;
@@ -73,7 +73,7 @@ public class ApplicationWorkbenchAdvisor extends WorkbenchAdvisor {
 		IAllocationService.getInstance().startService();
 		ITimingSpecificationService.getInstance().startService();
 		IDSEBackendService.getInstance().startService();
-		IExternalDSEExtensionService.getInstance().startService();
+		IDSEUIPatternExtensionService.getInstance().startService();
 
 		// The CLI handlers must be executed last such that all services are available.
 		ICommandLineInterfaceService.getInstance().executeHandlers();
@@ -91,7 +91,7 @@ public class ApplicationWorkbenchAdvisor extends WorkbenchAdvisor {
 		IDSEBackendService dbs = IDSEBackendService.getInstance();
 		dbs.initializeService();
 		dbs.registerDSEBackend(new Z3Backend());
-		IExternalDSEExtensionService.getInstance().initializeService();
+		IDSEUIPatternExtensionService.getInstance().initializeService();
 	}
 
 	/** {@inheritDoc} */