diff --git a/manuals/1.0/en/20.GettingStarted.md b/manuals/1.0/en/20.GettingStarted.md
index ea0fc0c..da1819d 100644
--- a/manuals/1.0/en/20.GettingStarted.md
+++ b/manuals/1.0/en/20.GettingStarted.md
@@ -104,7 +104,7 @@ class CountProvider implements ProviderInterface
 
 class MessageProvider implements ProviderInterface
 {
-    public function get(): int
+    public function get(): string
     {
         return 'hello world';
     }
diff --git a/manuals/1.0/ja/20.GettingStarted.md b/manuals/1.0/ja/20.GettingStarted.md
index 3440ea0..77d6c25 100644
--- a/manuals/1.0/ja/20.GettingStarted.md
+++ b/manuals/1.0/ja/20.GettingStarted.md
@@ -101,7 +101,7 @@ class CountProvider implements ProviderInterface
 
 class MessageProvider implements ProviderInterface
 {
-    public function get(): int
+    public function get(): string
     {
         return 'hello world';
     }