diff --git a/lex.go b/lex.go
index b9e14d9..767010f 100644
--- a/lex.go
+++ b/lex.go
@@ -274,7 +274,7 @@ func lexRoot(l *lexer) stateFn {
 		return lexNumber
 	case unicode.IsSpace(r):
 		return lexRoot
-	case unicode.IsLower(r), unicode.IsUpper(r):
+	case unicode.IsPrint(r):
 		l.keep(r)
 		return lexNameOrString
 	default:
diff --git a/tests/lex/13.in b/tests/lex/13.in
new file mode 100644
index 0000000..b0fd572
--- /dev/null
+++ b/tests/lex/13.in
@@ -0,0 +1,2 @@
+# https://github.com/jordanorelli/moon/issues/2
+some_path: /path/to/file
diff --git a/tests/lex/13.out b/tests/lex/13.out
new file mode 100644
index 0000000..dec3597
--- /dev/null
+++ b/tests/lex/13.out
@@ -0,0 +1,4 @@
+{t_comment  https://github.com/jordanorelli/moon/issues/2}
+{t_name some_path}
+{t_object_separator :}
+{t_string /path/to/file}