diff --git a/src/languages/ruby.js b/src/languages/ruby.js
index 6dc887c4e9..154a5c3a2a 100644
--- a/src/languages/ruby.js
+++ b/src/languages/ruby.js
@@ -46,14 +46,15 @@ function(hljs) {
     variants: [
       {begin: /'/, end: /'/},
       {begin: /"/, end: /"/},
-      {begin: '%[qw]?\\(', end: '\\)'},
-      {begin: '%[qw]?\\[', end: '\\]'},
-      {begin: '%[qw]?{', end: '}'},
-      {begin: '%[qw]?<', end: '>'},
-      {begin: '%[qw]?/', end: '/'},
-      {begin: '%[qw]?%', end: '%'},
-      {begin: '%[qw]?-', end: '-'},
-      {begin: '%[qw]?\\|', end: '\\|'},
+      {begin: /`/, end: /`/},
+      {begin: '%[qQwWx]?\\(', end: '\\)'},
+      {begin: '%[qQwWx]?\\[', end: '\\]'},
+      {begin: '%[qQwWx]?{', end: '}'},
+      {begin: '%[qQwWx]?<', end: '>'},
+      {begin: '%[qQwWx]?/', end: '/'},
+      {begin: '%[qQwWx]?%', end: '%'},
+      {begin: '%[qQwWx]?-', end: '-'},
+      {begin: '%[qQwWx]?\\|', end: '\\|'},
       {
         // \B in the beginning suppresses recognition of ?-sequences where ?
         // is the last character of a preceding identifier, as in: `func?4`