diff --git a/src/wp-content/themes/twentytwelve/css/ie.css b/src/wp-content/themes/twentytwelve/css/ie.css
index 7acef64df6..ddb1e41c18 100644
--- a/src/wp-content/themes/twentytwelve/css/ie.css
+++ b/src/wp-content/themes/twentytwelve/css/ie.css
@@ -53,7 +53,7 @@ img[class*="attachment-"] {
 	width: 65.104166667%;
 }
 body.template-front-page .site-content,
-body.single-attachment .site-content,
+body.attachment .site-content,
 body.full-width .site-content {
 	width: 100%;
 }