diff --git a/docs/chapter_sorting/quick_sort.md b/docs/chapter_sorting/quick_sort.md
index 72bbd941e..fa042b468 100755
--- a/docs/chapter_sorting/quick_sort.md
+++ b/docs/chapter_sorting/quick_sort.md
@@ -88,6 +88,8 @@
 === "C"
 
     ```c title="quick_sort.c"
+    [class]{}-[func]{swap}
+
     [class]{}-[func]{partition}
     ```