diff --git a/moonscript.py b/moonscript.py
index 135128b..f146431 100644
--- a/moonscript.py
+++ b/moonscript.py
@@ -67,14 +67,14 @@ class CustomLexer(LuaLexer):
             include('base')
         ],
         'dqs': [
-            (r'"', String, '#pop'),
+            (r'"', String.Double, '#pop'),
             (r'\\.|\'', String),  # double-quoted string don't need ' escapes
             (r'#\{', String.Interpol, "interpoling_string"),
             (r'#', String),
             include('strings')
         ],
         'sqs': [
-            (r"'", String, '#pop'),
+            (r"'", String.Single, '#pop'),
             (r'#|\\.|"', String),  # single quoted strings don't need " escapses
             include('strings')
         ]