diff --git a/addons/document/content_index.py b/addons/document/content_index.py
index 9e47621b4c3..a13ba35b60a 100644
--- a/addons/document/content_index.py
+++ b/addons/document/content_index.py
@@ -158,11 +158,10 @@ class contentIndex():
                     os.write(fd, content)
                     os.close(fd)
             
-                #fp = Popen(['file','-b','--mime-type',fname], shell=False, stdout=PIPE).stdout
-                fp = Popen(['file','-b',fname], shell=False, stdout=PIPE).stdout
+                fp = Popen(['file','-b','--mime',fname], shell=False, stdout=PIPE).stdout
                 result = fp.read()
                 fp.close()
-                mime2 = result.strip()
+                mime2 = result.split(';')[0]
                 self.__logger.debug('File gave us: %s', mime2)
                 # Note that the temporary file still exists now.
                 mime,fobj = mime_match(mime2, self.mimes)