diff --git a/flag.go b/flag.go
index e8cecc99..4b77256b 100644
--- a/flag.go
+++ b/flag.go
@@ -374,7 +374,7 @@ func (f *FlagSet) getUnknownFlagsHandling() UnknownFlagsHandling {
 	// then, check deprecated ParseErrorsWhitelist:
 	// if UnknownFlagsHandling is set, use it
 	if f.ParseErrorsWhitelist.UnknownFlagsHandling != ErrorOnUnknownFlag {
-		return f.ParseErrorsAllowlist.UnknownFlagsHandling
+		return f.ParseErrorsWhitelist.UnknownFlagsHandling
 	}
 
 	if f.ParseErrorsWhitelist.UnknownFlags {
diff --git a/flag_test.go b/flag_test.go
index 82fcd48a..1e26d190 100644
--- a/flag_test.go
+++ b/flag_test.go
@@ -542,11 +542,16 @@ func testParseWithUnknownFlags(f *FlagSet, t *testing.T, setUnknownFlags func(f
 	}
 }
 
-func testParseWithUnknownFlagsAndPassToArgs(f *FlagSet, t *testing.T) {
+func testParseWithUnknownFlagsAndPassToArgs(f *FlagSet, t *testing.T, setUp ...func(*FlagSet)) {
 	if f.Parsed() {
 		t.Fatal("f.Parse() = true before Parse")
 	}
-	f.ParseErrorsAllowlist.UnknownFlagsHandling = PassUnknownFlagToArgs
+	if len(setUp) == 0 {
+		f.ParseErrorsAllowlist.UnknownFlagsHandling = PassUnknownFlagToArgs
+	}
+	for _, s := range setUp {
+		s(f)
+	}
 	f.SetInterspersed(true)
 
 	f.BoolP("boola", "a", false, "bool value")
@@ -822,6 +827,13 @@ func TestIgnoreUnknownFlagsAndPassToArgs(t *testing.T) {
 	ResetForTesting(func() { t.Error("bad parse") })
 	testParseWithUnknownFlagsAndPassToArgs(GetCommandLine(), t)
 }
+
+func TestIgnoreUnknownFlagsAndPassToArgsBackwardsCompat(t *testing.T) {
+	ResetForTesting(func() { t.Error("bad parse") })
+	testParseWithUnknownFlagsAndPassToArgs(GetCommandLine(), t, func(f *FlagSet) {
+		f.ParseErrorsWhitelist.UnknownFlagsHandling = PassUnknownFlagToArgs
+	})
+}
 func TestFlagSetParse(t *testing.T) {
 	testParse(NewFlagSet("test", ContinueOnError), t)
 }