diff --git a/conf/lex_test.go b/conf/lex_test.go
index fc94d3c2..f146d424 100644
--- a/conf/lex_test.go
+++ b/conf/lex_test.go
@@ -439,3 +439,21 @@ func TestMapQuotedKeys(t *testing.T) {
 	lx = lex("foo = {\"bar\" = 4242}")
 	expect(t, lx, expectedItems)
 }
+
+func TestSpecialCharsMapQuotedKeys(t *testing.T) {
+	expectedItems := []item{
+		{itemKey, "foo", 1},
+		{itemMapStart, "", 1},
+		{itemKey, "bar-1.2.3", 1},
+		{itemMapStart, "", 1},
+		{itemKey, "port", 1},
+		{itemInteger, "4242", 1},
+		{itemMapEnd, "", 1},
+		{itemMapEnd, "", 1},
+		{itemEOF, "", 1},
+	}
+	lx := lex("foo = {'bar-1.2.3' = { port:4242 }}")
+	expect(t, lx, expectedItems)
+	lx = lex("foo = {\"bar-1.2.3\" = { port:4242 }}")
+	expect(t, lx, expectedItems)
+}