diff --git a/htdocs/admin/tools/dolibarr_export.php b/htdocs/admin/tools/dolibarr_export.php
index f88563ff512..1ad21490e4b 100644
--- a/htdocs/admin/tools/dolibarr_export.php
+++ b/htdocs/admin/tools/dolibarr_export.php
@@ -200,7 +200,6 @@ if (in_array($type, array('mysql', 'mysqli'))) {
     print '<div class="formelementrow">';
     print '<input type="checkbox" name="use_transaction" value="yes" id="checkbox_use_transaction" />';
     print '<label for="checkbox_use_transaction">'.$langs->trans("UseTransactionnalMode").'</label>';
-
     print '</div>';
 
     if (!empty($conf->global->MYSQL_OLD_OPTION_DISABLE_FK)) {
diff --git a/htdocs/core/lib/files.lib.php b/htdocs/core/lib/files.lib.php
index 288a28c111a..bad0bf9f48c 100644
--- a/htdocs/core/lib/files.lib.php
+++ b/htdocs/core/lib/files.lib.php
@@ -960,18 +960,18 @@ function dol_unescapefile($filename)
  */
 function dolCheckVirus($src_file)
 {
-	global $conf, $db;
+	global $conf;
 
 	if (!empty($conf->global->MAIN_ANTIVIRUS_COMMAND))
 	{
 		if (!class_exists('AntiVir')) {
 			require_once DOL_DOCUMENT_ROOT.'/core/class/antivir.class.php';
 		}
-		$antivir = new AntiVir($db);
+		$antivir=new AntiVir($db);
 		$result = $antivir->dol_avscan_file($src_file);
 		if ($result < 0)	// If virus or error, we stop here
 		{
-			$reterrors = $antivir->errors;
+			$reterrors=$antivir->errors;
 			return $reterrors;
 		}
 	}
@@ -1853,6 +1853,7 @@ function dol_convert_file($fileinput, $ext = 'png', $fileoutput = '', $page = ''
 				if (empty($fileoutput)) $fileoutput = $fileinput.".".$ext;
 
 				$count = $image->getNumberImages();
+
 				if (!dol_is_file($fileoutput) || is_writeable($fileoutput))
 				{
 					try {
diff --git a/htdocs/core/lib/sendings.lib.php b/htdocs/core/lib/sendings.lib.php
index 34dd845cdfa..ad1e6304d03 100644
--- a/htdocs/core/lib/sendings.lib.php
+++ b/htdocs/core/lib/sendings.lib.php
@@ -415,7 +415,7 @@ function show_list_sending_receive($origin, $origin_id, $filter = '')
 					//var_dump($expedition->linkedObjects);
 
 					$receiving = '';
-					if (count($expedition->linkedObjects['delivery']) > 0) $receiving = reset($expedition->linkedObjects['delivery']); // Take first link
+					if (!empty($expedition->linkedObjects['delivery'])) $receiving = reset($expedition->linkedObjects['delivery']); // Take first link
 
 					if (!empty($receiving))
 					{