diff --git a/matlab-maint.el b/matlab-maint.el
index eb93015..ee6b071 100644
--- a/matlab-maint.el
+++ b/matlab-maint.el
@@ -148,6 +148,8 @@
   "Run the tests for matlab mode.
 With universal ARG, ask for the code to be run with output tracking turned on."
   (interactive "P")
+  (when (buffer-file-name)
+    (save-buffer))
   (save-excursion
     (matlab-maint-set-buffer-to "tests/Makefile")
     (if (or arg matlab-shell-io-testing)