diff --git a/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.62.0-SNAPSHOT.jar b/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.62.0-SNAPSHOT.jar
index ba24ed856..d4f133221 100644
Binary files a/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.62.0-SNAPSHOT.jar and b/org.omg.sysml.logic.bundle/lib/org.omg.sysml.logic-0.62.0-SNAPSHOT.jar differ
diff --git a/org.omg.sysml.logic/src/main/java/org/omg/sysml/delegate/setting/Type_ownedDisjoining_SettingDelegate.java b/org.omg.sysml.logic/src/main/java/org/omg/sysml/delegate/setting/Type_ownedDisjoining_SettingDelegate.java
index 68ec2b661..ee478a668 100644
--- a/org.omg.sysml.logic/src/main/java/org/omg/sysml/delegate/setting/Type_ownedDisjoining_SettingDelegate.java
+++ b/org.omg.sysml.logic/src/main/java/org/omg/sysml/delegate/setting/Type_ownedDisjoining_SettingDelegate.java
@@ -1,7 +1,7 @@
 /*******************************************************************************
  * SysML 2 Pilot Implementation
  * Copyright (c) 2022 Siemens AG
- * Copyright (c) 2022 Model Driven Solutions, Inc.
+ * Copyright (c) 2022, 2026 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the Eclipse Public License as published by
@@ -40,7 +40,7 @@ protected EList<?> basicGet(InternalEObject owner) {
 		((Type)owner).getOwnedRelationship().stream().
 			filter(Disjoining.class::isInstance).
 			map(Disjoining.class::cast).
-			filter(gen->gen.getTypeDisjoined() == this).
+			filter(gen->gen.getTypeDisjoined() == owner).
 			forEachOrdered(disjoinings::add);
 		return disjoinings;
 	}
diff --git a/org.omg.sysml.logic/src/test/java/org/omg/sysml/logic/ST6RI_964_Type_getOwnedDisjoining_Test.java b/org.omg.sysml.logic/src/test/java/org/omg/sysml/logic/ST6RI_964_Type_getOwnedDisjoining_Test.java
new file mode 100644
index 000000000..1c729bb4a
--- /dev/null
+++ b/org.omg.sysml.logic/src/test/java/org/omg/sysml/logic/ST6RI_964_Type_getOwnedDisjoining_Test.java
@@ -0,0 +1,88 @@
+/*******************************************************************************
+ * SysML 2 Pilot Implementation
+ * Copyright (c) 2026 Model Driven Solutions, Inc.
+ *    
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *  
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *  
+ * @license LGPL-3.0-or-later <http://spdx.org/licenses/LGPL-3.0-or-later>
+ *  
+ *******************************************************************************/
+
+package org.omg.sysml.logic;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.util.List;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.omg.sysml.lang.sysml.Classifier;
+import org.omg.sysml.lang.sysml.Disjoining;
+import org.omg.sysml.lang.sysml.SysMLFactory;
+import org.omg.sysml.util.NamespaceUtil;
+
+public class ST6RI_964_Type_getOwnedDisjoining_Test {
+
+	@BeforeClass
+	public static void setUp() {
+		SysMLLogicStandaloneSetup.doSetup();
+	}
+
+	@Test
+	public void testType_getOwnedDisjoining_size() {
+		/*
+		 * package DisjoiningTest {
+    	 * 	   classifier A;
+    	 *     classifier B disjoint from A;
+         *     classifier C disjoint from A, B;
+         * }
+		 */
+		
+		org.omg.sysml.lang.sysml.Package pkg = SysMLFactory.eINSTANCE.createPackage();
+		pkg.setDeclaredName("DisjoiningTest");
+		
+		Classifier A = SysMLFactory.eINSTANCE.createClassifier();
+		A.setDeclaredName("A");
+		NamespaceUtil.addOwnedMemberTo(pkg, A);
+		
+		Classifier B = SysMLFactory.eINSTANCE.createClassifier();
+		B.setDeclaredName("B");
+		NamespaceUtil.addOwnedMemberTo(pkg, B);
+		Disjoining D = SysMLFactory.eINSTANCE.createDisjoining();
+		D.setDisjoiningType(A);
+		D.setTypeDisjoined(B);
+		B.getOwnedRelationship().add(D);
+		
+		Classifier C = SysMLFactory.eINSTANCE.createClassifier();
+		C.setDeclaredName("C");
+		NamespaceUtil.addOwnedMemberTo(pkg, C);
+		D = SysMLFactory.eINSTANCE.createDisjoining();
+		D.setDisjoiningType(A);
+		D.setTypeDisjoined(C);
+		C.getOwnedRelationship().add(D);
+		D = SysMLFactory.eINSTANCE.createDisjoining();
+		D.setDisjoiningType(B);
+		D.setTypeDisjoined(C);
+		C.getOwnedRelationship().add(D);
+		
+		List<Disjoining> B_ownedDisjoining = B.getOwnedDisjoining();
+		assertNotNull("B.ownedDisjoining not null", B_ownedDisjoining);
+		assertEquals("B.ownedDisjoining.size == 1", 1, B_ownedDisjoining.size());
+		
+		List<Disjoining> C_ownedDisjoining = C.getOwnedDisjoining();
+		assertNotNull("C.ownedDisjoining not null", C_ownedDisjoining);
+		assertEquals("C.ownedDisjoining.size == 2", 2, C_ownedDisjoining.size());
+	}
+}