diff --git a/Chapter-Instructions/Chapter_26_Instructions.md b/Chapter-Instructions/Chapter_26_Instructions.md
index 04cc02a..ff630a6 100644
--- a/Chapter-Instructions/Chapter_26_Instructions.md
+++ b/Chapter-Instructions/Chapter_26_Instructions.md
@@ -155,7 +155,7 @@ an error:
 ``` r
 df |> 
   group_by(grp) |> 
-  summarize(across(everything(), median()))
+  summarize(across(everything(), median))
 ```
 
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