diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index 4a98d1b47ae..c050d2e973c 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -607,12 +607,14 @@ if ($_GET["propalid"])
 		{
 		      if ($user->rights->propale->envoyer)
 			{
-                $file = $conf->propal->dir_output . "/$obj->ref/$obj->ref.pdf";
-                if (file_exists($file))
-                {
-                    print "<a class=\"tabAction\" href=\"propal.php?propalid=$propal->id&amp;action=presend\">".$langs->trans("Send")."</a>";
-                }
-		    }
+		          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+		          $propref = str_replace($forbidden_chars,"_",$obj->ref);
+		          $file = $conf->propal->dir_output . "/$propref/$propref.pdf";
+	                  if (file_exists($file))
+	       	            {
+	                      print "<a class=\"tabAction\" href=\"propal.php?propalid=$propal->id&amp;action=presend\">".$langs->trans("Send")."</a>";
+	                    }
+		        }
 		}
 
           // Delete
@@ -645,7 +647,9 @@ if ($_GET["propalid"])
 	   */
 	  if ($_GET["action"] == 'send')
 	    {
-	      $file = $conf->propal->dir_output . "/$propal->ref/$propal->ref.pdf";
+              $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+              $propref = str_replace($forbidden_chars,"_",$propal->ref);
+	      $file = $conf->propal->dir_output . "/$propref/$propref.pdf";
 	      if (file_exists($file))
 		{
 	      
@@ -702,8 +706,10 @@ if ($_GET["propalid"])
 
 	  print '<table class="border" width="100%">';
 	  
-	  $file = $conf->propal->dir_output . "/$propal->ref/$propal->ref.pdf";
-      $relativepath = "$propal->ref/$propal->ref.pdf";
+	  $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+	  $propref = str_replace($forbidden_chars,"_",$propal->ref);
+	  $file = $conf->propal->dir_output . "/$propref/$propref.pdf";
+          $relativepath = "$propref/$propref.pdf";
 
       $var=true;
       
diff --git a/htdocs/includes/modules/propale/pdf_propale_adytek.modules.php b/htdocs/includes/modules/propale/pdf_propale_adytek.modules.php
index 0e3c8bfdf98..b0c5de7fe24 100644
--- a/htdocs/includes/modules/propale/pdf_propale_adytek.modules.php
+++ b/htdocs/includes/modules/propale/pdf_propale_adytek.modules.php
@@ -72,7 +72,9 @@ class pdf_propale_adytek extends ModelePDFPropales
 
 	  if ($conf->propal->dir_output)
 	    {
-	      $dir = $conf->propal->dir_output . "/" . $propale->ref ;
+	      $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+	      $propref = str_replace($forbidden_chars,"_",$propale->ref);
+	      $dir = $conf->propal->dir_output . "/" . $propref ;
 	      if (! file_exists($dir))
 		{
                 umask(0);
@@ -89,7 +91,9 @@ class pdf_propale_adytek extends ModelePDFPropales
             return 0;
 	    }
 
-	  $file = $dir . "/" . $propale->ref . ".pdf";
+          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+          $propref = str_replace($forbidden_chars,"_",$propale->ref);
+          $file = $dir . "/" . $propref . ".pdf";
 
 	  if (file_exists($dir))
 	    {
diff --git a/htdocs/includes/modules/propale/pdf_propale_bleu.modules.php b/htdocs/includes/modules/propale/pdf_propale_bleu.modules.php
index 1506afc353c..a2c0e806371 100644
--- a/htdocs/includes/modules/propale/pdf_propale_bleu.modules.php
+++ b/htdocs/includes/modules/propale/pdf_propale_bleu.modules.php
@@ -72,7 +72,9 @@ class pdf_propale_bleu extends ModelePDFPropales
 
 	  if ($conf->propal->dir_output)
 	    {
-	      $dir = $conf->propal->dir_output . "/" . $propale->ref ;
+              $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+              $propref = str_replace($forbidden_chars,"_",$propale->ref);
+              $dir = $conf->propal->dir_output . "/" . $propref ;
 	      if (! file_exists($dir))
 		{
                 umask(0);
@@ -89,7 +91,9 @@ class pdf_propale_bleu extends ModelePDFPropales
             return 0;
 	    }
 	  
-	  $file = $dir . "/" . $propale->ref . ".pdf";
+          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+          $propref = str_replace($forbidden_chars,"_",$propale->ref);
+          $file = $dir . "/" . $propref . ".pdf";
 	  
 	  if (file_exists($dir))
 	    {
diff --git a/htdocs/includes/modules/propale/pdf_propale_jaune.modules.php b/htdocs/includes/modules/propale/pdf_propale_jaune.modules.php
index 8e2d63549ea..d50d593a18c 100644
--- a/htdocs/includes/modules/propale/pdf_propale_jaune.modules.php
+++ b/htdocs/includes/modules/propale/pdf_propale_jaune.modules.php
@@ -72,7 +72,9 @@ class pdf_propale_jaune extends ModelePDFPropales
 
 	  if ($conf->propal->dir_output)
 	    {
-	      $dir = $conf->propal->dir_output . "/" . $propale->ref ;
+              $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+              $propref = str_replace($forbidden_chars,"_",$propale->ref);
+              $dir = $conf->propal->dir_output . "/" . $propref ;
           if (! file_exists($dir))
 	    {
 	      umask(0);
@@ -89,7 +91,9 @@ class pdf_propale_jaune extends ModelePDFPropales
             return 0;
 	    }
 	  
-	  $file = $dir . "/" . $propale->ref . ".pdf";
+          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+          $propref = str_replace($forbidden_chars,"_",$propale->ref);
+          $file = $dir . "/" . $propref . ".pdf";
 	  
 	  if (file_exists($dir))
 	    {
diff --git a/htdocs/includes/modules/propale/pdf_propale_rouge.modules.php b/htdocs/includes/modules/propale/pdf_propale_rouge.modules.php
index b03bed5d414..1c47af66dcd 100644
--- a/htdocs/includes/modules/propale/pdf_propale_rouge.modules.php
+++ b/htdocs/includes/modules/propale/pdf_propale_rouge.modules.php
@@ -74,7 +74,9 @@ class pdf_propale_rouge extends ModelePDFPropales
 	  
 	  if ($conf->propal->dir_output)
 	    {
-	      $dir = $conf->propal->dir_output . "/" . $propale->ref ;
+              $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+              $propref = str_replace($forbidden_chars,"_",$propale->ref);
+              $dir = $conf->propal->dir_output . "/" . $propref ;
           if (! file_exists($dir))
             {
                 umask(0);
@@ -91,7 +93,9 @@ class pdf_propale_rouge extends ModelePDFPropales
             return 0;
 	    }
 
-	  $file = $dir . "/" . $propale->ref . ".pdf";
+          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+          $propref = str_replace($forbidden_chars,"_",$propale->ref);
+          $file = $dir . "/" . $propref . ".pdf";
 	  
 	  if (file_exists($dir))
 	    {
diff --git a/htdocs/includes/modules/propale/pdf_propale_vert.modules.php b/htdocs/includes/modules/propale/pdf_propale_vert.modules.php
index a17c09cdcf2..27849f1729a 100644
--- a/htdocs/includes/modules/propale/pdf_propale_vert.modules.php
+++ b/htdocs/includes/modules/propale/pdf_propale_vert.modules.php
@@ -72,7 +72,9 @@ class pdf_propale_vert extends ModelePDFPropales
 
 	  if ($conf->propal->dir_output)
 	    {
-	      $dir = $conf->propal->dir_output . "/" . $propale->ref ;
+              $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+              $propref = str_replace($forbidden_chars,"_",$propale->ref);
+              $dir = $conf->propal->dir_output . "/" . $propref ;
           if (! file_exists($dir))
 	    {
 	      umask(0);
@@ -89,7 +91,9 @@ class pdf_propale_vert extends ModelePDFPropales
             return 0;
 	    }
 	  
-	  $file = $dir . "/" . $propale->ref . ".pdf";
+          $forbidden_chars=array("/","\\",":","*","?","\"","<",">","|","[","]",",",";","=");
+          $propref = str_replace($forbidden_chars,"_",$propale->ref);
+          $file = $dir . "/" . $propref . ".pdf";
 	  
 	  if (file_exists($dir))
 	    {