diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index d30f466df27..7dd553b0046 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -714,6 +714,8 @@ else if ($action == "addline" && $user->rights->propal->creer)
 					}
 				}
 
+				$desc='';
+
 				// Define output language
 				if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($conf->global->PRODUIT_TEXTS_IN_THIRDPARTY_LANGUAGE))
 				{
@@ -734,8 +736,7 @@ else if ($action == "addline" && $user->rights->propal->creer)
 					$desc = $prod->description;
 				}
 
-				$desc.= ($desc && ! empty($product_desc)) ? ((dol_textishtml($desc) || dol_textishtml($product_desc))?"<br />\n":"\n") : "";
-				$desc.= $product_desc;
+            	$desc=dol_concatdesc($desc,$product_desc);
 			}
 
 			$type = $prod->type;
diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index c186f05df5a..2d348b131e8 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -618,6 +618,8 @@ else if ($action == 'addline' && $user->rights->commande->creer)
 					}
 				}
 
+				$desc='';
+
 				// Define output language
 				if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($conf->global->PRODUIT_TEXTS_IN_THIRDPARTY_LANGUAGE))
 				{
@@ -638,8 +640,7 @@ else if ($action == 'addline' && $user->rights->commande->creer)
 					$desc = $prod->description;
 				}
 
-				$desc.= ($desc && ! empty($product_desc)) ? ((dol_textishtml($desc) || dol_textishtml($product_desc))?"<br />\n":"\n") : "";
-				$desc.= $product_desc;
+            	$desc=dol_concatdesc($desc,$product_desc);
 			}
 
 			$type = $prod->type;
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 0c6e0e6c9b9..f6a326d4a67 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -1049,6 +1049,8 @@ else if (($action == 'addline' || $action == 'addline_predef') && $user->rights-
             		}
             	}
 
+            	$desc='';
+
             	// Define output language
             	if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($conf->global->PRODUIT_TEXTS_IN_THIRDPARTY_LANGUAGE))
             	{
@@ -1069,8 +1071,7 @@ else if (($action == 'addline' || $action == 'addline_predef') && $user->rights-
             		$desc = $prod->description;
             	}
 
-            	$desc.= ($desc && ! empty($product_desc)) ? ((dol_textishtml($desc) || dol_textishtml($product_desc))?"<br />\n":"\n") : "";
-            	$desc.= $product_desc;
+            	$desc=dol_concatdesc($desc,$product_desc);
             }
 
             if (! empty($prod->customcode) || ! empty($prod->country_code))
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 74f7279d537..5826e248b13 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -3367,11 +3367,12 @@ function dol_microtime_float()
 }
 
 /**
- *		Return if a text is a html content
+ *	Return if a text is a html content
  *
- *		@param	string	$msg		Content to check
- *		@param	int		$option		0=Full detection, 1=Fast check
- *		@return	boolean				true/false
+ *	@param	string	$msg		Content to check
+ *	@param	int		$option		0=Full detection, 1=Fast check
+ *	@return	boolean				true/false
+ *	@see	dol_concatdesc
  */
 function dol_textishtml($msg,$option=0)
 {
@@ -3402,6 +3403,28 @@ function dol_textishtml($msg,$option=0)
 	}
 }
 
+/**
+ *  Concat 2 descriptions (second one after first one)
+ *  text1 html + text2 html => text1 + '<br>' + text2
+ *  text1 html + text2 txt  => text1 + '<br>' + dol_nl2br(text2)
+ *  text1 txt  + text2 html => dol_nl2br(text1) + '<br>' + text2
+ *  text1 txt  + text2 txt  => text1 + '\n' + text2
+ *
+ *  @param	string	$text1		Text 1
+ *  @param	string	$text2		Text 2
+ *  @param  string	$forxml     false=Use <br>, true=Use <br />
+ *  @return	string				Text 1 + new line + Text2
+ *  @see    dol_textishtml
+ */
+function dol_concatdesc($text1,$text2,$forxml=false)
+{
+	$ret='';
+	$ret.= (! dol_textishtml($text1) && dol_textishtml($text2))?dol_nl2br($text1, 0, $forxml):$text1;
+	$ret.= (! empty($text1) && ! empty($text2)) ? ((dol_textishtml($text1) || dol_textishtml($text2))?($forxml?"<br \>\n":"<br>\n") : "\n") : "";
+	$ret.= (dol_textishtml($text1) && ! dol_textishtml($text2))?dol_nl2br($text2, 0, $forxml):$text2;
+	return $ret;
+}
+
 /**
  *  Make substition into a string
  *  There is two type of substitions: