diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 9a259fe35e1..2b2cbc178f1 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1015,7 +1015,7 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
 		);
 		print 'var tradMonths = '.json_encode($tradMonths).';'."\n";
 		print '</script>'."\n";
-		
+
 		// Add datepicker default options
 		print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/datepicker.js"></script>'."\n";
 		// Add datepicker i18n for current language
@@ -1439,7 +1439,7 @@ function left_menu($menu_array_before, $helppagename='', $moresearchform='', $me
 
 	// Execute hook printLeftBlock
 	$parameters=array();
-    $leftblock.=$hookmanager->executeHooks('printLeftBlock',$parameters);    // Note that $action and $object may have been modified by some hooks
+    $leftblock=$hookmanager->executeHooks('printLeftBlock',$parameters);    // Note that $action and $object may have been modified by some hooks
     print $leftblock;
 
 	if ($conf->use_javascript_ajax && $conf->global->MAIN_MENU_USE_JQUERY_LAYOUT) print '</div> <!-- End left layout -->'."\n";
@@ -1622,4 +1622,4 @@ if (! function_exists("llxFooter"))
 	}
 }
 
-?>
\ No newline at end of file
+?>