diff --git a/wcs/qommon/form.py b/wcs/qommon/form.py
index 1389aaa92..d2442ad67 100644
--- a/wcs/qommon/form.py
+++ b/wcs/qommon/form.py
@@ -1080,6 +1080,15 @@ class FileWithPreviewWidget(CompositeWidget):
                 '.pif',
                 '.php',
                 '.js',
+                '.pht',
+                '.phtml',
+                '.shtml',
+                '.asa',
+                '.asax',
+                '.cer',
+                '.swf',
+                '.xap',
+                '.ps1',
                 'application/x-ms-dos-executable',
                 'text/x-php',
             ]