diff --git a/example/qml/page/T_RadioButton.qml b/example/qml/page/T_RadioButton.qml
index 46fae27b..0dce688d 100644
--- a/example/qml/page/T_RadioButton.qml
+++ b/example/qml/page/T_RadioButton.qml
@@ -164,7 +164,7 @@ FluScrollablePage{
                 verticalCenter: parent.verticalCenter
                 left: parent.left
             }
-            currentIndex: 1
+            currentIndex: -1
             FluCheckBox{
                 disabled: radio_button_switch4.checked
                 text: qsTr("Radio Button_1")
diff --git a/src/Qt5/imports/FluentUI/Controls/FluRadioButtons.qml b/src/Qt5/imports/FluentUI/Controls/FluRadioButtons.qml
index 2c79e575..8229930d 100644
--- a/src/Qt5/imports/FluentUI/Controls/FluRadioButtons.qml
+++ b/src/Qt5/imports/FluentUI/Controls/FluRadioButtons.qml
@@ -18,7 +18,9 @@ Item{
             for(var i = 0;i<buttons.length;i++){
                 buttons[i].checked = false
             }
-            buttons[currentIndex].checked = true
+            if(currentIndex>=0 && currentIndex<buttons.length){
+                buttons[currentIndex].checked = true
+            }
         }
     }
     implicitWidth: childrenRect.width
@@ -42,9 +44,6 @@ Item{
                         }
                     }
                 }
-                if(control.currentIndex < 0){
-                    control.currentIndex = 0
-                }
                 d.updateChecked()
             }
         }
@@ -52,7 +51,7 @@ Item{
     Component{
         id:com_horizontal
         RowLayout {
-            data: buttons
+            data: control.buttons
             spacing: control.spacing
             Component.onCompleted: {
                 for(var i = 0;i<control.buttons.length;i++){
@@ -65,9 +64,6 @@ Item{
                         }
                     }
                 }
-                if(control.currentIndex < 0){
-                    control.currentIndex = 0
-                }
                 d.updateChecked()
             }
         }
diff --git a/src/Qt6/imports/FluentUI/Controls/FluRadioButtons.qml b/src/Qt6/imports/FluentUI/Controls/FluRadioButtons.qml
index 5d4ae4aa..3d79aa35 100644
--- a/src/Qt6/imports/FluentUI/Controls/FluRadioButtons.qml
+++ b/src/Qt6/imports/FluentUI/Controls/FluRadioButtons.qml
@@ -19,7 +19,9 @@ Item{
             for(var i = 0;i<buttons.length;i++){
                 buttons[i].checked = false
             }
-            buttons[currentIndex].checked = true
+            if(currentIndex>=0 && currentIndex<buttons.length){
+                buttons[currentIndex].checked = true
+            }
         }
     }
     implicitWidth: childrenRect.width
@@ -43,9 +45,6 @@ Item{
                         }
                     }
                 }
-                if(control.currentIndex < 0){
-                    control.currentIndex = 0
-                }
                 d.updateChecked()
             }
         }
@@ -53,7 +52,7 @@ Item{
     Component{
         id:com_horizontal
         RowLayout {
-            data: buttons
+            data: control.buttons
             spacing: control.spacing
             Component.onCompleted: {
                 for(var i = 0;i<control.buttons.length;i++){
@@ -66,9 +65,6 @@ Item{
                         }
                     }
                 }
-                if(control.currentIndex < 0){
-                    control.currentIndex = 0
-                }
                 d.updateChecked()
             }
         }