diff --git a/mode/scala.py b/mode/scala.py
index 4e418bc..3dd8c67 100644
--- a/mode/scala.py
+++ b/mode/scala.py
@@ -206,9 +206,9 @@ class Scala(Fundamental):
     grammar     = ScalaGrammar
     commentc    = '//'
     actions     = [ScalaStart, ScalaDocBrowse, ScalaDocLookup]
-    opentokens  = ('delimiter', 'sub.start')
+    opentokens  = ('delimiter', 'sub.start', 'sub.sub.start', 'sub.sub.sub.start')
     opentags    = {'(': ')', '[': ']', '{': '}'}
-    closetokens = ('delimiter', 'sub.end')
+    closetokens = ('delimiter', 'sub.end', 'sub.sub.end', 'sub.sub.sub.end')
     closetags   = {')': '(', ']': '[', '}': '{'}
     config = {
         'scala.api': 'http://www.scala-lang.org/api/current/allclasses.html',