diff --git a/de.prob.core/META-INF/MANIFEST.MF b/de.prob.core/META-INF/MANIFEST.MF
index b12e057765ce1a5f1ed1d348178eed5c44146ee6..3e4e524df1871574909e1a0b764af1489cd07c8d 100644
--- a/de.prob.core/META-INF/MANIFEST.MF
+++ b/de.prob.core/META-INF/MANIFEST.MF
@@ -5,8 +5,7 @@ Bundle-SymbolicName: de.prob.core;singleton:=true
 Bundle-Version: 9.3.0.qualifier
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.5.0,4.0.0)",
  org.rodinp.core;bundle-version="[1.3.1,1.7.0)",
- org.eventb.core;bundle-version="[2.1.0,2.6.0)",
- org.eventb.theory.core;bundle-version="2.0.0"
+ org.eventb.core;bundle-version="[2.1.0,2.6.0)"
 REENABLE-FOR-THEORY-PLUGIN: org.eventb.theory.core;bundle-version="2.0.0"
 Bundle-ActivationPolicy: lazy
 Eclipse-BundleShape: dir
@@ -129,3 +128,4 @@ Bundle-ClassPath: .,
  lib/dependencies/xmlpull-1.1.3.1.jar,
  lib/dependencies/xpp3_min-1.1.4c.jar,
  lib/dependencies/xstream-1.4.3.jar
+Import-Package: org.eventb.theory.core