diff --git a/de.prob.core/META-INF/MANIFEST.MF b/de.prob.core/META-INF/MANIFEST.MF
index 24e7e082fc0f78cd913e851f4045eca079d5673f..8cb6e29fca551c07f9282b3619035125fe0e95ab 100644
--- a/de.prob.core/META-INF/MANIFEST.MF
+++ b/de.prob.core/META-INF/MANIFEST.MF
@@ -5,9 +5,7 @@ Bundle-SymbolicName: de.prob.core;singleton:=true
 Bundle-Version: 9.1.2
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.5.0,4.0.0)",
  org.rodinp.core;bundle-version="[1.3.1,1.6.0)",
- org.eventb.core;bundle-version="[2.1.0,2.4.0)",
- org.eclipse.jface;bundle-version="[3.6.0,4.0.0)",
- org.eclipse.ui;bundle-version="[3.6.0,4.0.0)"
+ org.eventb.core;bundle-version="[2.1.0,2.4.0)"
 Bundle-ActivationPolicy: lazy
 Bundle-Vendor: HHU Düsseldorf STUPS Group
 Export-Package: de.be4.classicalb.core.parser,
diff --git a/de.prob.core/src/de/prob/core/Animator.java b/de.prob.core/src/de/prob/core/Animator.java
index 22b73ded0764bf013dbf7980ba26622489657762..d2dd609caaf34354117bf0cf0de778a5e2c5d5c4 100644
--- a/de.prob.core/src/de/prob/core/Animator.java
+++ b/de.prob.core/src/de/prob/core/Animator.java
@@ -10,7 +10,6 @@ import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.eclipse.core.commands.Command;
 import org.osgi.service.prefs.Preferences;
 
 import de.prob.core.command.IComposableCommand;
diff --git a/de.prob.core/src/de/prob/core/command/IComposableCommand.java b/de.prob.core/src/de/prob/core/command/IComposableCommand.java
index feeac3329b3173559f672fc299e50546c4bc0598..77d10e8c8c44caddf5fa03c457e55de447e04343 100644
--- a/de.prob.core/src/de/prob/core/command/IComposableCommand.java
+++ b/de.prob.core/src/de/prob/core/command/IComposableCommand.java
@@ -3,7 +3,6 @@
  */
 package de.prob.core.command;
 
-import org.eclipse.core.commands.Command;
 
 import de.prob.parser.ISimplifiedROMap;
 import de.prob.prolog.output.IPrologTermOutput;