diff --git a/grammars/rust.cson b/grammars/rust.cson
index 2b70a7b..c26fbc2 100644
--- a/grammars/rust.cson
+++ b/grammars/rust.cson
@@ -300,7 +300,7 @@
   {
     'comment': 'Miscellaneous operator'
     'name': 'keyword.operator.misc.rust'
-    'match': '(=>|::|\\bas\\b)'
+    'match': '(=>|::|\\bas\\b|\\?)'
   }
   {
     'comment': 'Comparison operator'