diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 2001079..bd52f70 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -1172,6 +1172,16 @@
   var F: func = function('min', [[5, 8, 6]])
   F->get('name')->assert_equal('min')
   F->get('args')->assert_equal([[5, 8, 6]])
+
+  var lines =<< trim END
+      vim9script
+      def DoThat(): number
+        var Getqflist: func = function('getqflist', [{id: 42}])
+        return Getqflist()->get('id', 77)
+      enddef
+      assert_equal(0, DoThat())
+  END
+  CheckScriptSuccess(lines)
 enddef
 
 def Test_getbufinfo()
diff --git a/src/version.c b/src/version.c
index a628f51..425f8f3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3230,
+/**/
     3229,
 /**/
     3228,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 7d169f8..0d54db3 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2130,6 +2130,9 @@
 	    }
 	}
 	ret_type = type->tt_member;
+	if (ret_type == &t_unknown)
+	    // return type not known yet, use a runtime check
+	    ret_type = &t_any;
     }
     else
     {