diff --git a/src/line/flex-templates/basic-cards.ts b/src/line/flex-templates/basic-cards.ts
index 8f34afa4ba..de1afdaa8b 100644
--- a/src/line/flex-templates/basic-cards.ts
+++ b/src/line/flex-templates/basic-cards.ts
@@ -10,6 +10,7 @@ import type {
   FlexText,
   ListItem,
 } from "./types.js";
+import { attachFooterText } from "./common.js";
 
 /**
  * Create an info card with title, body, and optional footer
@@ -76,22 +77,7 @@ export function createInfoCard(title: string, body: string, footer?: string): Fl
   };
 
   if (footer) {
-    bubble.footer = {
-      type: "box",
-      layout: "vertical",
-      contents: [
-        {
-          type: "text",
-          text: footer,
-          size: "xs",
-          color: "#AAAAAA",
-          wrap: true,
-          align: "center",
-        } as FlexText,
-      ],
-      paddingAll: "lg",
-      backgroundColor: "#FAFAFA",
-    };
+    attachFooterText(bubble, footer);
   }
 
   return bubble;
diff --git a/src/line/flex-templates/common.ts b/src/line/flex-templates/common.ts
new file mode 100644
index 0000000000..be39463eea
--- /dev/null
+++ b/src/line/flex-templates/common.ts
@@ -0,0 +1,20 @@
+import type { FlexBox, FlexBubble, FlexText } from "./types.js";
+
+export function attachFooterText(bubble: FlexBubble, footer: string) {
+  bubble.footer = {
+    type: "box",
+    layout: "vertical",
+    contents: [
+      {
+        type: "text",
+        text: footer,
+        size: "xs",
+        color: "#AAAAAA",
+        wrap: true,
+        align: "center",
+      } as FlexText,
+    ],
+    paddingAll: "lg",
+    backgroundColor: "#FAFAFA",
+  } as FlexBox;
+}
diff --git a/src/line/flex-templates/schedule-cards.ts b/src/line/flex-templates/schedule-cards.ts
index 91c3f440c2..2bf1ab9b4e 100644
--- a/src/line/flex-templates/schedule-cards.ts
+++ b/src/line/flex-templates/schedule-cards.ts
@@ -1,4 +1,5 @@
 import type { Action, FlexBox, FlexBubble, FlexComponent, FlexText } from "./types.js";
+import { attachFooterText } from "./common.js";
 
 /**
  * Create a receipt/summary card (for orders, transactions, data tables)
@@ -135,22 +136,7 @@ export function createReceiptCard(params: {
   };
 
   if (footer) {
-    bubble.footer = {
-      type: "box",
-      layout: "vertical",
-      contents: [
-        {
-          type: "text",
-          text: footer,
-          size: "xs",
-          color: "#AAAAAA",
-          wrap: true,
-          align: "center",
-        } as FlexText,
-      ],
-      paddingAll: "lg",
-      backgroundColor: "#FAFAFA",
-    };
+    attachFooterText(bubble, footer);
   }
 
   return bubble;
@@ -499,22 +485,7 @@ export function createAgendaCard(params: {
   };
 
   if (footer) {
-    bubble.footer = {
-      type: "box",
-      layout: "vertical",
-      contents: [
-        {
-          type: "text",
-          text: footer,
-          size: "xs",
-          color: "#AAAAAA",
-          align: "center",
-          wrap: true,
-        } as FlexText,
-      ],
-      paddingAll: "lg",
-      backgroundColor: "#FAFAFA",
-    };
+    attachFooterText(bubble, footer);
   }
 
   return bubble;