1 files changed, 2 insertions, 2 deletions

diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
index 1eb426aea1..12c8405101 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
@@ -107,7 +107,7 @@ module HTML
 
       # gauntlet
       if style !~ /^([:,;#%.\sa-zA-Z0-9!]|\w-\w|\'[\s\w]+\'|\"[\s\w]+\"|\([\d,\s]+\))*$/ ||
-          style !~ /^(\s*[-\w]+\s*:\s*[^:;]*(;|$))*$/
+          style !~ /^(\s*[-\w]+\s*:\s*[^:;]*(;|$)\s*)*$/
         return ''
       end
 
@@ -170,4 +170,4 @@ module HTML
       (value =~ /(^[^\/:]*):|(&#0*58)|(&#x70)|(%|%)3A/ && !allowed_protocols.include?(value.split(protocol_separator).first))
     end
   end
-end
\ No newline at end of file
+end