1 files changed, 1 insertions, 1 deletions
diff --git a/Ivy.pm b/Ivy.pm
index dd9fd2f..c75235a 100644
--- a/Ivy.pm
+++ b/Ivy.pm
@@ -253,7 +253,7 @@ sub start (@)
 
     foreach my $opt  (keys %defaultOptions) {
 	# si un parametre n'a pas ete defini
-	next if exists $options{$opt} ;
+	next if defined $options{$opt} ;
 	# est-il facultatif
 	if (defined $defaultOptions{$opt}) {
 	    $options{$opt} = $defaultOptions{$opt} ;