diff --git a/mousepad/mousepad-file.c b/mousepad/mousepad-file.c
index 0148b69..26dcccc 100644
--- a/mousepad/mousepad-file.c
+++ b/mousepad/mousepad-file.c
@@ -832,6 +832,9 @@ mousepad_file_save (MousepadFile  *file,
           /* we saved succesfully */
           mousepad_file_set_readonly (file, FALSE);
 
+          /* guess and set the file's filetype/language */
+          mousepad_file_set_language (file, mousepad_file_guess_language (file));
+
           /* everything went file */
           succeed = TRUE;