--- a/cws/cw03.tex	Fri Nov 25 12:10:00 2016 +0000
+++ b/cws/cw03.tex	Sat Nov 26 17:02:52 2016 +0000
@@ -16,7 +16,7 @@
 
 \noindent
 \textbf{Important:} Do not use any mutable data structures in your
-submission! They are not needed. This excluded the use of
+submission! They are not needed. This excludes the use of
 \texttt{ListBuffer}s, for example. Do not use \texttt{return} in your
 code! It has a different meaning in Scala, than in Java.  Do not use
 \texttt{var}! This declares a mutable variable.  Make sure the