diff --git a/regex.py b/regex.py
index 0de89ec..3baf5f5 100644
--- a/regex.py
+++ b/regex.py
@@ -47,13 +47,9 @@ class Alternation:
 		return 'Alternation(%s)' % ', '.join(map(repr, self.elements))
 
 	def __str__(self):
-		if all(type(i) == Literal and i.single_char for i in self.elements):
-			# Special case: [abc]
-			return '[%s]' % ''.join(map(str, self.elements))
-		else:
-			# Nothing binds looser than alternation, so just
-			# pass everything through as-is
-			return '|'.join(map(str, self.elements))
+		# Nothing binds looser than alternation, so just pass
+		# everything through as-is
+		return '|'.join(map(str, self.elements))
 
 class Star:
 	def __init__(self, element):
@@ -75,6 +71,7 @@ def lit(text):
 	return Literal(text)
 
 def concat(*elements):
+	# TODO: drop literals that are just ''
 	flattened = []
 	for element in elements:
 		if type(element) == Concatenation: