diff --git a/chapter12.tex b/chapter12.tex
index eb9a0e3..fec597c 100644
--- a/chapter12.tex
+++ b/chapter12.tex
@@ -530,7 +530,7 @@ proceeds as follows:
 \path[draw=red,thick,->,line width=2pt] (5) -- (2);
 \end{tikzpicture}
 \end{center}
-We notice that the color or both nodes 2 and 5
+We notice that the color of both nodes 2 and 5
 is red, while they are adjacent nodes in the graph.
 Thus, the graph is not bipartite.