diff --git a/slides/body/lect-w07-seq.tex b/slides/body/lect-w07-seq.tex
index cee4c087..1ff93d57 100644
--- a/slides/body/lect-w07-seq.tex
+++ b/slides/body/lect-w07-seq.tex
@@ -540,7 +540,7 @@
 def sort[T: Ordering](xs: Seq[T]): Seq[T] = xs.sorted // mer om Ordering sen
 
 def freq[T](xs: Seq[T]): Seq[(T, Int)] =
-  xs.distinct.map((_, xs.count(_ == x)))
+  xs.distinct.map(x => x -> xs.count(_ == x))
 \end{Code}
 \pause
 Standardbibliotekets metoder försöker ordna så att det blir samma konkreta typ in som ut, men ibland väljs annan lämplig konkret samling, t.ex. kan en \code{Array} bli en \code{ArrayBuffer}.