diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 55a4305..d4a5309 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -2434,6 +2434,43 @@
         res)
 enddef
 
+def s:DebugFor()
+  echo "hello"
+  for a in [0]
+    echo a
+  endfor
+enddef
+
+def Test_debug_for()
+  var res = execute('disass debug s:DebugFor')
+  assert_match('<SNR>\d*_DebugFor\_s*' ..
+          'echo "hello"\_s*' ..
+          '0 DEBUG line 1-1 varcount 0\_s*' ..
+          '1 PUSHS "hello"\_s*' ..
+          '2 ECHO 1\_s*' ..
+
+          'for a in \[0\]\_s*' ..
+          '3 DEBUG line 2-2 varcount 0\_s*' ..
+          '4 STORE -1 in $0\_s*' ..
+          '5 PUSHNR 0\_s*' ..
+          '6 NEWLIST size 1\_s*' ..
+          '7 DEBUG line 2-2 varcount 2\_s*' ..
+          '8 FOR $0 -> 15\_s*' ..
+          '9 STORE $1\_s*' ..
+
+          'echo a\_s*' ..
+          '10 DEBUG line 3-3 varcount 2\_s*' ..
+          '11 LOAD $1\_s*' ..
+          '12 ECHO 1\_s*' ..
+
+          'endfor\_s*' ..
+          '13 DEBUG line 4-4 varcount 2\_s*' ..
+          '14 JUMP -> 7\_s*' ..
+          '15 DROP\_s*' ..
+          '16 RETURN void*',
+        res)
+enddef
+
 func Legacy() dict
   echo 'legacy'
 endfunc