diff --git a/ouexam.dtx b/ouexam.dtx
index 0c80356..cf76ee7 100644
--- a/ouexam.dtx
+++ b/ouexam.dtx
@@ -1633,7 +1633,7 @@
       \ifnum\theqrunning=\theqexpected%
       \else\ClassWarning{ouexam}{%
         actual mark (\theqrunning) for question %
-        \thequestion\space doesn't match^^J%
+        \thequestion\space does not match^^J%
         expected mark (\theqexpected)}%
       \fi%
     \fi%
@@ -1749,7 +1749,7 @@
       \ifnum\thesubqrunning=\thesubqexpected%
       \else\ClassWarning{ouexam}{%
         actual mark (\thesubqrunning) for question %
-        \thequestion\thesubquestion\space doesn't match^^J%
+        \thequestion\thesubquestion\space does not match^^J%
         expected mark (\thesubqexpected)}%
       \fi%
     \fi%
@@ -1997,7 +1997,7 @@
   \ifnum\thesectrunning=\thesectexpected%
   \else\ClassWarning{ouexam}{%
     actual mark (\thesectrunning) for section %
-    \thexsection\space doesn't match^^J%
+    \thexsection\space does not match^^J%
     expected mark (\thesectexpected)}%
   \fi%
 %    \end{macrocode}