diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 3403ce40ece..95674e35aa8 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -9141,21 +9141,21 @@ abstract class CommonObject
 	/**
 	 *  Show photos of an object (nbmax maximum), into several columns
 	 *
-	 *  @param		string		$modulepart		'product', 'ticket', ...
-	 *  @param      string		$sdir        	Directory to scan (full absolute path)
-	 *  @param      int|string	$size        	0 or ''=original size, 1 or 'small'=use thumbnail if possible
-	 *  @param      int			$nbmax       	Nombre maximum de photos (0=pas de max)
-	 *  @param      int			$nbbyrow     	Number of image per line or -1 to use div separator or 0 to use no separator. Used only if size=1 or 'small'.
-	 * 	@param		int			$showfilename	1=Show filename
-	 * 	@param		int			$showaction		1=Show icon with action links (resize, delete)
-	 * 	@param		int			$maxHeight		Max height of original image when size='small' (so we can use original even if small requested). If 0, always use 'small' thumb image.
-	 * 	@param		int			$maxWidth		Max width of original image when size='small'
-	 *  @param      int     	$nolink         Do not add a href link to view enlarged imaged into a new tab
-	 *  @param      int|string  $overwritetitle Do not add title tag on image
-	 *  @param		int			$usesharelink	Use the public shared link of image (if not available, the 'nophoto' image will be shown instead)
-	 *  @param		string		$cache			A string if we want to use a cached version of image
-	 *  @param		string		$addphotorefcss	Add CSS to img of photos
-	 *  @return     string						Html code to show photo. Number of photos shown is saved in this->nbphoto
+	 *  @param		string					$modulepart		'product', 'ticket', ...
+	 *  @param      string					$sdir        	Directory to scan (full absolute path)
+	 *  @param      int<0,1>|''|'small'		$size        	0 or ''=original size, 1 or 'small'=use thumbnail if possible
+	 *  @param      int						$nbmax       	Nombre maximum de photos (0=pas de max)
+	 *  @param      int						$nbbyrow     	Number of image per line or -1 to use div separator or 0 to use no separator. Used only if size=1 or 'small'.
+	 * 	@param		int						$showfilename	1=Show filename
+	 * 	@param		int						$showaction		1=Show icon with action links (resize, delete)
+	 * 	@param		int						$maxHeight		Max height of original image when size='small' (so we can use original even if small requested). If 0, always use 'small' thumb image.
+	 * 	@param		int						$maxWidth		Max width of original image when size='small'
+	 *  @param      int     				$nolink         Do not add a href link to view enlarged imaged into a new tab
+	 *  @param      int|string  			$overwritetitle Do not add title tag on image
+	 *  @param		int						$usesharelink	Use the public shared link of image (if not available, the 'nophoto' image will be shown instead)
+	 *  @param		string					$cache			A string if we want to use a cached version of image
+	 *  @param		string					$addphotorefcss	Add CSS to img of photos
+	 *  @return     string									Html code to show photo. Number of photos shown is saved in this->nbphoto
 	 */
 	public function show_photos($modulepart, $sdir, $size = 0, $nbmax = 0, $nbbyrow = 5, $showfilename = 0, $showaction = 0, $maxHeight = 120, $maxWidth = 160, $nolink = 0, $overwritetitle = 0, $usesharelink = 0, $cache = '', $addphotorefcss = 'photoref')
 	{