diff --git a/lib/classes/module/console/sphinxGenerateSuggestion.class.php b/lib/classes/module/console/sphinxGenerateSuggestion.class.php
index ba9f4dbf72..42d504a437 100644
--- a/lib/classes/module/console/sphinxGenerateSuggestion.class.php
+++ b/lib/classes/module/console/sphinxGenerateSuggestion.class.php
@@ -60,7 +60,19 @@ class module_console_sphinxGenerateSuggestion extends Command
       $databox = databox::get_instance($sbas_id);
 
       $output->writeln("process Databox " . $databox->get_viewname() . " / $index\n");
-
+      
+      if(!is_executable("/usr/local/bin/indexer"))
+      {
+        $output->writeln("<error>'/usr/local/bin/indexer' is not executable</error>");
+        return 1;
+      }
+      
+      if(!file_exists($tmp_file))
+      {
+        $output->writeln("<error> file '".$tmp_file."' does not exist</error>");
+        return 1;
+      }
+      
       $cmd = '/usr/local/bin/indexer metadatas' . $index . '  --buildstops ' . $tmp_file . ' 1000000 --buildfreqs';
       exec($cmd);