diff --git a/docs/languages/CSharp/CSharp_1_basic.mdx b/docs/languages/CSharp/CSharp_1_basic.mdx
index f74332a5..a6616b1d 100644
--- a/docs/languages/CSharp/CSharp_1_basic.mdx
+++ b/docs/languages/CSharp/CSharp_1_basic.mdx
@@ -305,7 +305,7 @@ var code1 = """int i = 0;""";
 var code2 = $"""int x = {x};""";
 var code3 = $$"""
     #include <stdio.h>
-    int main() {
+    int main(void) {
         const char *s = "{y} = {{y}}";  // {y} = 2
         return 0;
     }