diff --git a/Assets/VRM10/Runtime/Components/Constraint/IVrm10Constraint.cs b/Assets/VRM10/Runtime/Components/Constraint/IVrm10Constraint.cs
index 06a32e255..0123028e8 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/IVrm10Constraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/IVrm10Constraint.cs
@@ -5,11 +5,16 @@ namespace UniVRM10
 {
     public interface IVrm10Constraint
     {
-        Transform ConstraintDst { get; }
-        Transform ConstriantSrc { get; }
+        /// <summary>
+        /// The object to which the Constraint applies
+        /// </summary>
+        Transform ConstraintTarget { get; }
 
-        /// <param name="targetInitState"></param>
-        /// <param name="srcInitState"></param>
-        internal void Process(in TransformState dstInitState, in TransformState srcInitState);
+        /// <summary>
+        /// The object for which the Constraint is the source of the pose
+        /// </summary>
+        Transform ConstraintSource { get; }
+
+        internal void Process(in TransformState targetInitState, in TransformState sourceInitState);
     }
-}
+}
\ No newline at end of file
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
index 524849bcb..1cc480e08 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
@@ -35,9 +35,9 @@ namespace UniVRM10
             }
         }
 
-        Transform IVrm10Constraint.ConstraintDst => transform;
+        Transform IVrm10Constraint.ConstraintTarget => transform;
 
-        Transform IVrm10Constraint.ConstriantSrc => Source;
+        Transform IVrm10Constraint.ConstraintSource => Source;
 
         /// <summary>
         /// https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_node_constraint-1.0_beta/README.ja.md#example-of-implementation-1
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
index 2bc949faa..44507b596 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
@@ -31,9 +31,9 @@ namespace UniVRM10
             }
         }
 
-        Transform IVrm10Constraint.ConstraintDst => transform;
+        Transform IVrm10Constraint.ConstraintTarget => transform;
 
-        Transform IVrm10Constraint.ConstriantSrc => Source?.transform;
+        Transform IVrm10Constraint.ConstraintSource => Source;
 
         /// <summary>
         /// https://github.com/vrm-c/vrm-specification/blob/master/specification/VRMC_node_constraint-1.0_beta/README.ja.md#example-of-implementation
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
index 9b3311322..f33f43e29 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
@@ -9,9 +9,9 @@ namespace UniVRM10
     [DisallowMultipleComponent]
     public class Vrm10RotationConstraint : MonoBehaviour, IVrm10Constraint
     {
-        Transform IVrm10Constraint.ConstraintDst => transform;
+        Transform IVrm10Constraint.ConstraintTarget => transform;
 
-        Transform IVrm10Constraint.ConstriantSrc => Source;
+        Transform IVrm10Constraint.ConstraintSource => Source;
 
         [SerializeField]
         public Transform Source = default;
diff --git a/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10Runtime.cs b/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10Runtime.cs
index 80da841ec..3d628b13d 100644
--- a/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10Runtime.cs
+++ b/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10Runtime.cs
@@ -136,11 +136,11 @@ namespace UniVRM10
             // 3. Constraints
             foreach (var constraint in Constraints)
             {
-                if (constraint.ConstriantSrc != null)
+                if (constraint.ConstraintSource != null)
                 {
                     constraint.Process(
-                        dstInitState: _initPose[constraint.ConstraintDst],
-                        srcInitState: _initPose[constraint.ConstriantSrc]);
+                        targetInitState: _initPose[constraint.ConstraintTarget],
+                        sourceInitState: _initPose[constraint.ConstraintSource]);
                 }
             }
 
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
index 6eb80dcc5..34b51f3ca 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
@@ -601,7 +601,7 @@ namespace UniVRM10
                 }
 
                 // serialize to gltfNode
-                var node = converter.Nodes[constraint.ConstraintDst.gameObject];
+                var node = converter.Nodes[constraint.ConstraintTarget.gameObject];
                 var nodeIndex = model.Nodes.IndexOf(node);
                 var gltfNode = nodes[nodeIndex];
                 UniGLTF.Extensions.VRMC_node_constraint.GltfSerializer.SerializeTo(ref gltfNode.extensions, vrmConstraint);