diff --git a/unitests.sh b/unitests.sh
index c3376a6..226691d 100644
--- a/unitests.sh
+++ b/unitests.sh
@@ -82,10 +82,12 @@ cd $(dirname $0)
 	{
 		echo -en $GREEN"usage :\n"
 		echo -en  $CYAN"bash unitest.sh [option] [files list ...]\n"
+		echo -en $GREEN"or (to test signals and ctrl-d) :\n"
+		echo -en  $CYAN"sudo bash unitest.sh [option] [files list ...]\n"
 		echo -en $GREEN"\n[options]\n"
-		echo -en  $CYAN"help : print usage\n"
-		echo -en  $CYAN"  -p : print tests commands\n"
-		echo -en  $CYAN"  -s : test in script, not interactif\n"
+		echo -en  $CYAN"-help : print usage\n"
+		echo -en  $CYAN"   -p : print tests commands\n"
+		echo -en  $CYAN"   -s : (only in non-sudo) test in script, not interactif\n"
 		echo -en $GREEN"\n[files list ...] if empty, defaults files will be used :\n"
 		echo -en  $CYAN"$DEFAULT_FILES_USAGE"
 		echo -en $ENDCO"\n"
@@ -115,7 +117,7 @@ cd $(dirname $0)
 		LIST_FILES="$DEFAULT_FILES"
 		if [ $# -gt 0 ]
 		then
-			if [ "$1" == "help" ]
+			if [ "$1" == "-help" ]
 			then
 				print_usage
 				cd $CURRENT_D