diff --git a/more/free-programming-playgrounds.md b/more/free-programming-playgrounds.md
index 3e2fb9974..78ceec110 100644
--- a/more/free-programming-playgrounds.md
+++ b/more/free-programming-playgrounds.md
@@ -95,7 +95,7 @@
 * [C# playground](https://codapi.org/csharp) - Codeapi
 * [CodeSandbox](https://codesandbox.io/s/c-z2m9v)
 * [.Net Fiddle](https://dotnetfiddle.net)
-* [GDB](https://www.onlinegdb.com/online_csharp_compiler)
+* [OnlineGDB](https://www.onlinegdb.com/online_csharp_compiler)
 * [Getvm](https://getvm.io/playgrounds/c-sharp-playground)
 * [Jdoodle](https://www.jdoodle.com/compile-c-sharp-online)
 * [myCompiler](https://www.mycompiler.io/online-csharp-compiler)