diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 4cf37b7..76fd3fa 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -2413,7 +2413,7 @@
   assert_match('<SNR>\d*_UseMember\_s*' ..
           'var d = {func: Legacy}\_s*' ..
           '\d PUSHS "func"\_s*' ..
-          '\d PUSHFUNC "Legacy"\_s*' ..
+          '\d PUSHFUNC "g:Legacy"\_s*' ..
           '\d NEWDICT size 1\_s*' ..
           '\d STORE $0\_s*' ..
 
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 9dc0d73..f97f902 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -1232,11 +1232,23 @@
       g:result = getreg('"')->count(' ')
       return ''
     enddef
+    # global function works at script level
     &operatorfunc = g:CountSpaces
     new
     'a b c d e'->setline(1)
     feedkeys("g@_", 'x')
     assert_equal(4, g:result)
+
+    &operatorfunc = ''
+    g:result = 0
+    # global function works in :def function
+    def Func()
+      &operatorfunc = g:CountSpaces
+    enddef
+    Func()
+    feedkeys("g@_", 'x')
+    assert_equal(4, g:result)
+
     bwipe!
   END
   CheckScriptSuccess(lines)