diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index d4c42f3..766f983 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -410,6 +410,9 @@
   endtry
 endif
 
+" Delete the .res file, it may change behavior for completion
+call delete(fnamemodify(g:testname, ':r') .. '.res')
+
 " Locate Test_ functions and execute them.
 redir @q
 silent function /^Test_
diff --git a/src/version.c b/src/version.c
index 02bd497..1e02a58 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4598,
+/**/
     4597,
 /**/
     4596,