diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
index b0b2729..a4e13ab 100644
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -566,9 +566,9 @@
     @support.bigmemtest(size=INT_MAX + 1, memuse=9, dry_run=False)
     def test_huge_string_builtins(self, size):
         value = '1' + ' ' * size
-        self.assertRaises(OverflowError, self.interp.getint, value)
-        self.assertRaises(OverflowError, self.interp.getdouble, value)
-        self.assertRaises(OverflowError, self.interp.getboolean, value)
+        self.assertRaises(OverflowError, self.interp.tk.getint, value)
+        self.assertRaises(OverflowError, self.interp.tk.getdouble, value)
+        self.assertRaises(OverflowError, self.interp.tk.getboolean, value)
         self.assertRaises(OverflowError, self.interp.eval, value)
         self.assertRaises(OverflowError, self.interp.evalfile, value)
         self.assertRaises(OverflowError, self.interp.record, value)