diff --git a/htdocs/telephonie/script/graph-statistiques-clients.php b/htdocs/telephonie/script/graph-statistiques-clients.php
index c9b0933321e48ebd2dbf4545c311e318b5d4e41a..975c812989c2708d6ade61175a88541e86617150 100644
--- a/htdocs/telephonie/script/graph-statistiques-clients.php
+++ b/htdocs/telephonie/script/graph-statistiques-clients.php
@@ -46,6 +46,10 @@ if ($db->query($sql))
   $clientPerChild =  ceil($row[0] / $childrenTotal);
   $db->free();
 }
+else
+{
+  exit("Erreur selection des clients");
+}
 
 while ( $childrenNow < $childrenTotal )
 {
@@ -55,7 +59,7 @@ while ( $childrenNow < $childrenTotal )
     {
       die( "error\n" );
     }
-  elseif ( $pid == 0 )
+  elseif ( $pid )
     {
       $childrenNow++;
     }