diff --git a/org.omg.kerml.xpect.tests/src/org/omg/kerml/xpect/tests/validation/MultiplicityAlias_valid.kerml.xt b/org.omg.kerml.xpect.tests/src/org/omg/kerml/xpect/tests/validation/MultiplicityAlias_valid.kerml.xt
index 0ba70c0f7..ce6a0cc92 100644
--- a/org.omg.kerml.xpect.tests/src/org/omg/kerml/xpect/tests/validation/MultiplicityAlias_valid.kerml.xt
+++ b/org.omg.kerml.xpect.tests/src/org/omg/kerml/xpect/tests/validation/MultiplicityAlias_valid.kerml.xt
@@ -37,4 +37,8 @@ package MultiplicityAlias_valid {
         feature k : Integer { alias a for em; }
         feature v : Natural = em;
     }
+
+	class M [0..1] {
+	    alias for Base::exactlyOne;
+	}
 }
diff --git a/org.omg.kerml.xtext/src/org/omg/kerml/xtext/validation/KerMLValidator.xtend b/org.omg.kerml.xtext/src/org/omg/kerml/xtext/validation/KerMLValidator.xtend
index 20f3da789..e3fbc663e 100644
--- a/org.omg.kerml.xtext/src/org/omg/kerml/xtext/validation/KerMLValidator.xtend
+++ b/org.omg.kerml.xtext/src/org/omg/kerml/xtext/validation/KerMLValidator.xtend
@@ -559,8 +559,8 @@ class KerMLValidator extends AbstractKerMLValidator {
 		checkTargetNotObject(t, t.ownedUnioning, INVALID_TYPE_UNIONING_TYPES_NOT_SELF_MSG, INVALID_TYPE_UNIONING_TYPES_NOT_SELF)
 		
 		// validateTypeOwnedMultiplicity
-		var multiplicityMemberships = t.ownedMembership.filter[memberElement instanceof Multiplicity];
-		checkAtMostOne(multiplicityMemberships, INVALID_TYPE_OWNED_MULTIPLICITY_MSG, SysMLPackage.eINSTANCE.membership_MemberElement, INVALID_TYPE_OWNED_MULTIPLICITY)
+		var multiplicities = t.ownedMember.filter(Multiplicity);
+		checkAtMostOne(multiplicities, INVALID_TYPE_OWNED_MULTIPLICITY_MSG, null, INVALID_TYPE_OWNED_MULTIPLICITY)
 	}
 	
 	
diff --git a/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.63.0-SNAPSHOT.jar b/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.63.0-SNAPSHOT.jar
index ca5d24132..368ee9644 100644
Binary files a/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.63.0-SNAPSHOT.jar and b/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.63.0-SNAPSHOT.jar differ
diff --git a/org.omg.sysml.model.bundle/lib/org.omg.sysml.model-0.63.0-SNAPSHOT.jar b/org.omg.sysml.model.bundle/lib/org.omg.sysml.model-0.63.0-SNAPSHOT.jar
index 00fc84f78..4df2845cf 100644
Binary files a/org.omg.sysml.model.bundle/lib/org.omg.sysml.model-0.63.0-SNAPSHOT.jar and b/org.omg.sysml.model.bundle/lib/org.omg.sysml.model-0.63.0-SNAPSHOT.jar differ