diff --git a/lang/en_utf8/quiz.php b/lang/en_utf8/quiz.php
index ae55df8902f..f8d5d0e3176 100644
--- a/lang/en_utf8/quiz.php
+++ b/lang/en_utf8/quiz.php
@@ -244,7 +244,7 @@ $string['modulenameplural'] = 'Quizzes';
 $string['moveto'] = 'Move to >>';
 $string['multianswer'] = 'Embedded Answers (Cloze)';
 $string['multichoice'] = 'Multiple Choice';
-$string['multipleanswers'] = 'Choose at least one answer';
+$string['multipleanswers'] = 'Choose at least one answer.';
 $string['multiplier'] = 'Multiplier';
 $string['name'] = 'Name';
 $string['newattemptfail'] = 'Error: Could not start a new attempt at the quiz';
@@ -407,7 +407,7 @@ $string['shuffleanswers'] = 'Shuffle answers';
 $string['shufflequestions'] = 'Shuffle questions';
 $string['significantfigures'] = ' with $a ';
 $string['significantfiguresformat'] = 'significant figures';
-$string['singleanswer'] = 'Choose one answer';
+$string['singleanswer'] = 'Choose one answer.';
 $string['sortalpha'] = 'Sort by name';
 $string['sortage']   = 'Sort by age';
 $string['sortsubmit']   = 'Sort questions';