diff --git a/Compile.md b/Compile.md
index 31d6251c7..8f5591340 100644
--- a/Compile.md
+++ b/Compile.md
@@ -1,4 +1,3 @@
-
 # Compiling MeloNX on macOS
 
 ## Prerequisites
@@ -20,6 +19,11 @@ cd MeloNX
 ./compile.sh
 ```
 
+You may need to run this command if compilation fails. (You will need to put in your user password. Your password will not be shown at all.)
+```
+sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
+```
+
 ### 2. Open the Xcode Project
 
 Navigate to the **Xcode project file** located at: