diff --git a/scripts/vim-patch.sh b/scripts/vim-patch.sh
index 3a4b39ce2e..fe4c99b1da 100755
--- a/scripts/vim-patch.sh
+++ b/scripts/vim-patch.sh
@@ -942,6 +942,12 @@ is_na_patch() {
           test "$HUNK_NUM_FINAL" -ne 0 && return 1
         fi
         ;;
+      src/testdir/Make*.mak)
+        HUNKS=$(git -C "${VIM_SOURCE_DIR}" diff-tree --no-commit-id -r -b -U0 \
+          '-I\stest8[67]\.out \\$' \
+          "$patch" -- "${file}")
+        test -n "$HUNKS" && return 1
+        ;;
       *.h)
         HUNKS=$(git -C "${VIM_SOURCE_DIR}" diff-tree --no-commit-id -r -b -U0 \
           '-I^\s+$' \
diff --git a/scripts/vim_na_regexp.txt b/scripts/vim_na_regexp.txt
index 43266bc9bd..6980c1e06b 100644
--- a/scripts/vim_na_regexp.txt
+++ b/scripts/vim_na_regexp.txt
@@ -75,6 +75,7 @@
 ^src/testdir/test_channel
 ^src/testdir/test_terminal
 ^src/testdir/test_vim9
+^src/testdir/test8[67]\.
 ^src/tool[a-z]
 ^src/vim\.[^h]
 ^src/vim9