Content personalization is a very important aspect in the field of e-learning, although current standards do not fully support it. In this paper, we outline an extension to the ADL SCORM (Sharable Content Object Reference Model) standard in an effort to permit a suitable adaptivity based on user's characteristics. Applying this extension, we can create adaptable courses, which should be personalized before shown to the student. Categories and Subject Descriptors: H.4.0 [Information Systems Applications]: General. General Terms: Standardization.