diff --git a/main/exercice/freeanswer.class.php b/main/exercice/freeanswer.class.php
old mode 100644
new mode 100755
index d420d0ecfb..fc4c714deb
--- a/main/exercice/freeanswer.class.php
+++ b/main/exercice/freeanswer.class.php
@@ -33,7 +33,7 @@ if(!class_exists('FreeAnswer')):
 class FreeAnswer extends Question {
 
 	static $typePicture = 'open_answer.gif';
-	static $explanationLangVar = 'freeAnswer';
+	static $explanationLangVar = 'FreeAnswer';
 
 	/**
 	 * Constructor
diff --git a/main/exercice/hotspot.class.php b/main/exercice/hotspot.class.php
old mode 100644
new mode 100755
index e4eb332ef6..18ea364438
--- a/main/exercice/hotspot.class.php
+++ b/main/exercice/hotspot.class.php
@@ -25,7 +25,7 @@ if(!class_exists('HotSpot')):
 class HotSpot extends Question {
 
 	static $typePicture = 'hotspot.gif';
-	static $explanationLangVar = 'Hotspot';
+	static $explanationLangVar = 'HotSpot';
 
 
 	function HotSpot() {