diff --git a/ecrire/inc_version.php3 b/ecrire/inc_version.php3
index 66e3fdc5b0126d5ce13d201d6d1a706f89769935..c02e005f529113a908554829146a936cf9fc3920 100644
--- a/ecrire/inc_version.php3
+++ b/ecrire/inc_version.php3
@@ -781,7 +781,7 @@ class Link {
 	// Effacer une variable
 	//
 	function delVar($name) {
-		if($this->vars[$name]) unset($this->vars[$name]);
+		if(isset($this->vars[$name])) unset($this->vars[$name]);
 		if($this->arrays[$name]) unset($this->arrays[$name]);
 	}