diff --git a/build/lightdb/core/lightdb.php b/build/lightdb/core/lightdb.php
index 434a86a..758ad85 100644
--- a/build/lightdb/core/lightdb.php
+++ b/build/lightdb/core/lightdb.php
@@ -125,7 +125,8 @@
 			/* (2) On ajoute les données aux fichier */
 			$json_data = json_encode($data);
 			$this->driver->seek($already_line);
-			$this->line++;
+			if( $already_line == $this->line )
+				$this->line++;
 			$written = $this->driver->fwrite( $json_data.PHP_EOL );
 
 			// Si erreur d'écriture, on retourne FALSE
@@ -134,7 +135,7 @@
 
 			/* (3) On enregistre l'index */
 			$this->index[$key] = [
-				'line' => $this->line - 1,
+				'line' => $already_line - 1,
 				'hash' => sha1($json_data)
 			];