diff --git a/de.prob.ui/src/de/prob/ui/eventb/StartUnitAnalysisHandler.java b/de.prob.ui/src/de/prob/ui/eventb/StartUnitAnalysisHandler.java
index 4bbe282bcfb7ed929ee4e66951746ad85f7954c2..28cfabb12da42127692e7bbbf8efb864db3c90f0 100644
--- a/de.prob.ui/src/de/prob/ui/eventb/StartUnitAnalysisHandler.java
+++ b/de.prob.ui/src/de/prob/ui/eventb/StartUnitAnalysisHandler.java
@@ -206,8 +206,8 @@ public class StartUnitAnalysisHandler extends AbstractHandler implements
 									+ rootElement.getClass());
 				}
 
-				// shutdown animator
-				animator.shutdown();
+				// TODO: should i shutdown the animator?
+				// animator.shutdown();
 			} catch (ProBException e) {
 				e.notifyUserOnce();
 				throw new ExecutionException("Unit Analysis Failed", e);