diff --git a/components/settings.js b/components/settings.js
index 0da7e66..6680fa0 100644
--- a/components/settings.js
+++ b/components/settings.js
@@ -102,7 +102,7 @@ export default function Setting(props) {
                 textAlignVertical: "center",
               }}
             >
-              内部バージョン: 4.4.2.1
+              内部バージョン: 4.4.2.2
             </Text>
             <View style={{ flex: 1 }} />
           </View>
diff --git a/components/駅名表/Sign.js b/components/駅名表/Sign.js
index 4517c54..626c7fa 100644
--- a/components/駅名表/Sign.js
+++ b/components/駅名表/Sign.js
@@ -44,6 +44,7 @@ export default function Sign(props) {
   };
   const [nexPrePosition, setNexPrePosition] = useState(0);
   useInterval(() => {
+    if (currentStation.length == 1) return;
     LayoutAnimation.easeInEaseOut();
     setNexPrePosition(
       nexPrePosition + 1 == currentStation.length ? 0 : nexPrePosition + 1
@@ -122,6 +123,7 @@ const StationNumberMaker = (props) => {
     .filter((d) => (d.StationNumber ? true : false))
     .map((d, index, array) => (
       <View
+        key={d + index}
         style={{
           position: "absolute",
           alignContent: "center",