diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
index c1ba95896..5121f485b 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
@@ -16,7 +16,7 @@ namespace UniVRM10
         public Transform Source = default;
 
         [SerializeField]
-        [Range(0, 10.0f)]
+        [Range(0, 1.0f)]
         public float Weight = 1.0f;
 
         [SerializeField]
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
index 292757d73..204e7405a 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RollConstraint.cs
@@ -16,7 +16,7 @@ namespace UniVRM10
         public Transform Source = default;
 
         [SerializeField]
-        [Range(0, 10.0f)]
+        [Range(0, 1.0f)]
         public float Weight = 1.0f;
 
         [SerializeField]
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
index 5fb3a915a..9cf573896 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10RotationConstraint.cs
@@ -14,7 +14,7 @@ namespace UniVRM10
         public Transform Source = default;
 
         [SerializeField]
-        [Range(0, 10.0f)]
+        [Range(0, 1.0f)]
         public float Weight = 1.0f;
 
         Quaternion _srcRestLocalQuatInverse;