diff --git a/programming/android/user-guide/getting-started.md b/programming/android/user-guide/getting-started.md
index 7c6727d..85bb5ef 100644
--- a/programming/android/user-guide/getting-started.md
+++ b/programming/android/user-guide/getting-started.md
@@ -96,7 +96,7 @@ In this section, we are going to explain how to create a simple `HelloWorld` app
 >
 >- Android Studio 2022.3.1 is used here in this guide.
 >- You can get similar source code from
->    - <a href="https://github.com/Dynamsoft/code-parser-mobile-samples/tree/main/android/HelloWorld" target="_blank">HelloWorld Sample (Java)</a>
+>    - <a href="https://github.com/Dynamsoft/code-parser-mobile-samples/tree/master/android/HelloWorld" target="_blank">HelloWorld Sample (Java)</a>
 
 ### Create a New Project
 
diff --git a/programming/ios/user-guide/getting-started.md b/programming/ios/user-guide/getting-started.md
index ce4b16c..a4e7201 100644
--- a/programming/ios/user-guide/getting-started.md
+++ b/programming/ios/user-guide/getting-started.md
@@ -84,7 +84,7 @@ The following sample will demonstrate how to create a simple `HelloWorld` app fo
 >Note:
 >
 >- The following steps are completed in XCode 14.2
->- View the entire Swift source code from [HelloWorld(Swift) sample](https://github.com/Dynamsoft/code-parser-mobile-samples/blob/main/ios/HelloWorld/)
+>- View the entire Swift source code from [HelloWorld(Swift) sample](https://github.com/Dynamsoft/code-parser-mobile-samples/blob/master/ios/HelloWorld/)
 
 ### Create a New Project