diff --git a/grammars/r.cson b/grammars/r.cson
index 7e7da79..c5f8780 100644
--- a/grammars/r.cson
+++ b/grammars/r.cson
@@ -440,7 +440,7 @@
   'roxygen': {
     'patterns': [
       {
-        'begin': "^(#\\')\\s*"
+        'begin': "^(#\\'[^\\S\\n]*)"
         'beginCaptures':
           '1':
             'name': 'punctuation.definition.comment.r'