diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index 4217be1751f..52556740142 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -495,7 +495,7 @@ if ($_GET['propalid'] > 0)
                     print '<input type="hidden" name="action" value="set_contact">';
                     $form->select_contacts($societe->id, $propal->contactid, 'contactidp');
                     print '</td><td>';
-                    print '<input type="submit" value="'.$langs->trans('Modify').'">';
+                    print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
                     print '</form>';
                     print '</td>';
                 }
@@ -545,7 +545,7 @@ if ($_GET['propalid'] > 0)
                         print '<input type="hidden" name="action" value="set_project">';
                         $form->select_projects($societe->id, $propal->projetidp, 'projetidp');
                         print '</td><td>';
-                        print '<input type="submit" value="'.$langs->trans('Modify').'">';
+                        print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
                         print '</form>';
                         print '</td>';
                     }
@@ -576,7 +576,7 @@ if ($_GET['propalid'] > 0)
                 print '<input type="hidden" name="action" value="setremise">';
                 print '<td colspan="2"><input type="text" name="remise" size="3" value="'.$propal->remise_percent.'">% ';
                 print '</td><td>';
-                print '<input type="submit" value="'.$langs->trans('Modify').'">';
+                print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
                 print ' <a href="propal/aideremise.php?propalid='.$propal->id.'">?</a>';
                 print '</td>';
                 print '</form>';
@@ -795,7 +795,7 @@ if ($_GET['propalid'] > 0)
                 print '  <td align="right"><input type="text" size="5" name="np_price"></td>';
                 print '  <td align="right"><input type="text" size="2" value="1" name="np_qty"></td>';
                 print '  <td align="right" nowrap><input type="text" size="2" value="'.$societe->remise_client.'" name="np_remise">%</td>';
-                print '  <td align="center" colspan="3"><input type="submit" value="'.$langs->trans('Add').'" name="addligne"></td>';
+                print '  <td align="center" colspan="3"><input type="submit" class="button" value="'.$langs->trans('Add').'" name="addligne"></td>';
                 print '</tr>';
     
                 print '</form>';
@@ -815,7 +815,7 @@ if ($_GET['propalid'] > 0)
                 print '<td>&nbsp;</td>';
                 print '<td align="right"><input type="text" size="2" name="qty" value="1"></td>';
                 print '<td align="right" nowrap><input type="text" size="2" name="remise" value="'.$societe->remise_client.'">%</td>';
-                print '<td align="center" colspan="3"><input type="submit" value="'.$langs->trans("Add").'" name="addligne"></td>';
+                print '<td align="center" colspan="3"><input type="submit" class="button" value="'.$langs->trans("Add").'" name="addligne"></td>';
                 print "</tr>\n";
     
                 print '</form>';
@@ -849,7 +849,7 @@ if ($_GET['propalid'] > 0)
       print '<option value="3">'.$propal->labelstatut[3].'</option>';
       print '</select>';
       print '</td></tr>';
-      print '<tr><td align="center" colspan="2"><input type="submit" value="'.$langs->trans('Validate').'"></td>';
+      print '<tr><td align="center" colspan="2"><input type="submit" class="button" value="'.$langs->trans('Validate').'"></td>';
       print '</tr></table></form>';
     }
 
diff --git a/htdocs/compta/propal.php b/htdocs/compta/propal.php
index e7f35010a8e..d38aedfa0c1 100644
--- a/htdocs/compta/propal.php
+++ b/htdocs/compta/propal.php
@@ -201,7 +201,7 @@ if ($_GET["propalid"])
 		  print '<input type="hidden" name="action" value="set_contact">';
 		  $form->select_contacts($societe->id, $propal->contactid, 'contactidp');
 		  print '</td><td>';
-		  print '<input type="submit" value="'.$langs->trans('Modify').'">';
+		  print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
 		  print '</form>';
 		  print '</td>';
 		}
@@ -251,7 +251,7 @@ if ($_GET["propalid"])
 		      print '<input type="hidden" name="action" value="set_project">';
 		      $form->select_projects($societe->id, $propal->projetidp, 'projetidp');
 		      print '</td><td>';
-		      print '<input type="submit" value="'.$langs->trans('Modify').'">';
+		      print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
 		      print '</form>';
 		      print '</td>';
 		    }
@@ -282,7 +282,7 @@ if ($_GET["propalid"])
 	      print '<input type="hidden" name="action" value="setremise">';
 	      print '<td colspan="2"><input type="text" name="remise" size="3" value="'.$propal->remise_percent.'">% ';
 	      print '</td><td>';
-	      print '<input type="submit" value="'.$langs->trans('Modify').'">';
+	      print '<input type="submit" class="button" value="'.$langs->trans('Modify').'">';
 	      print ' <a href="propal/aideremise.php?propalid='.$propal->id.'">?</a>';
 	      print '</td>';
 	      print '</form>';