diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index ce30b8d..0d76b3b 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -197,9 +197,11 @@
 	// restore to empty when write failed
 	if (empty_bufname)
 	{
-	    VIM_CLEAR(buf->b_fname);
+	    // prevent double free
+	    if (buf->b_sfname != buf->b_ffname)
+		VIM_CLEAR(buf->b_sfname);
+	    buf->b_fname = NULL;
 	    VIM_CLEAR(buf->b_ffname);
-	    VIM_CLEAR(buf->b_sfname);
 	    unchanged(buf, TRUE, FALSE);
 	}
     }