diff --git a/samples/12_c_extensions/01_basics/README.md b/samples/12_c_extensions/01_basics/README.md
index fa23fddc..e410ede2 100644
--- a/samples/12_c_extensions/01_basics/README.md
+++ b/samples/12_c_extensions/01_basics/README.md
@@ -95,7 +95,7 @@ Run the following command from Linux/macOS terminal:
 Or from Windows Powershell:
 
 ```
-> .\dragobruby-bind.exe --output=mygame\ext-bind.c mygame\ext.c
+> .\dragonruby-bind.exe --output=mygame\ext-bind.c mygame\ext.c
 ```
 
 With the `ext-bind.c` in place you can compile your C extension into a dynamic