diff --git a/lib/redcloth.rb b/lib/redcloth.rb
index 421346cc7..7111de513 100644
--- a/lib/redcloth.rb
+++ b/lib/redcloth.rb
@@ -465,8 +465,7 @@ class RedCloth < String
             style << "vertical-align:#{ v_align( $& ) };" if text =~ A_VLGN
         end
 
-        style << "#{ htmlesc $1 };" if not filter_styles and
-            text.sub!( /\{([^}]*)\}/, '' )
+        style << "#{ htmlesc $1 };" if text.sub!( /\{([^}]*)\}/, '' ) && !filter_styles
 
         lang = $1 if
             text.sub!( /\[([^)]+?)\]/, '' )
diff --git a/lib/redmine/wiki_formatting.rb b/lib/redmine/wiki_formatting.rb
index 39b81e44a..3fbb108ad 100644
--- a/lib/redmine/wiki_formatting.rb
+++ b/lib/redmine/wiki_formatting.rb
@@ -32,6 +32,7 @@ module Redmine
         super
         self.hard_breaks=true
         self.no_span_caps=true
+        self.filter_styles=true
       end
       
       def to_html(*rules, &block)
diff --git a/test/unit/helpers/application_helper_test.rb b/test/unit/helpers/application_helper_test.rb
index 04449d921..9b8debc97 100644
--- a/test/unit/helpers/application_helper_test.rb
+++ b/test/unit/helpers/application_helper_test.rb
@@ -49,7 +49,8 @@ class ApplicationHelperTest < HelperTestCase
       '!http://foo.bar/image.jpg!' => '<img src="http://foo.bar/image.jpg" alt="" />',
       'floating !>http://foo.bar/image.jpg!' => 'floating <div style="float:right"><img src="http://foo.bar/image.jpg" alt="" /></div>',
       'with class !(some-class)http://foo.bar/image.jpg!' => 'with class <img src="http://foo.bar/image.jpg" class="some-class" alt="" />',
-      'with style !{width:100px;height100px}http://foo.bar/image.jpg!' => 'with style <img src="http://foo.bar/image.jpg" style="width:100px;height100px;" alt="" />',
+      # inline styles should be stripped
+      'with style !{width:100px;height100px}http://foo.bar/image.jpg!' => 'with style <img src="http://foo.bar/image.jpg" alt="" />',
       'with title !http://foo.bar/image.jpg(This is a title)!' => 'with title <img src="http://foo.bar/image.jpg" title="This is a title" alt="This is a title" />',
       'with title !http://foo.bar/image.jpg(This is a double-quoted "title")!' => 'with title <img src="http://foo.bar/image.jpg" title="This is a double-quoted &quot;title&quot;" alt="This is a double-quoted &quot;title&quot;" />',
     }