diff --git a/inputs/lecture_16.tex b/inputs/lecture_16.tex
index fdd1ed3..65bc80d 100644
--- a/inputs/lecture_16.tex
+++ b/inputs/lecture_16.tex
@@ -207,7 +207,7 @@ Consider $K(\bH^2)$.
 A flow $\Z \acts X$ corresponds to the graph of
 \begin{IEEEeqnarray*}{rCl}
     X &\longrightarrow & X \\
-     1&\longmapsto & 1 \cdot x
+     x&\longmapsto & 1 \cdot x
 \end{IEEEeqnarray*}
 and this graph is an element of $K(\bH^2)$.