diff --git a/classes/Notice_tag.php b/classes/Notice_tag.php
index 0365973f56..f2247299a4 100644
--- a/classes/Notice_tag.php
+++ b/classes/Notice_tag.php
@@ -40,7 +40,7 @@ class Notice_tag extends Memcached_DataObject
         $qry =
           'SELECT notice.* ' .
           'FROM notice JOIN notice_tag ON notice.id = notice_tag.notice_id ' .
-          'WHERE notice_tag.tag = "%s" ';
+          "WHERE notice_tag.tag = '%s' ";
 
         return Notice::getStream(sprintf($qry, $tag),
                                  'notice_tag:notice_stream:' . common_keyize($tag),
diff --git a/classes/User.php b/classes/User.php
index 40cf18df67..8b0b9acd50 100644
--- a/classes/User.php
+++ b/classes/User.php
@@ -589,7 +589,7 @@ class User extends Memcached_DataObject
           'JOIN profile_tag ON (profile_tag.tagged = subscription.subscriber ' .
           'AND profile_tag.tagger = subscription.subscribed) ' .
           'WHERE subscription.subscribed = %d ' .
-          'AND profile_tag.tag = "%s" ' .
+          "AND profile_tag.tag = '%s' " .
           'AND subscription.subscribed != subscription.subscriber ' .
           'ORDER BY subscription.created DESC ';
 
@@ -617,7 +617,7 @@ class User extends Memcached_DataObject
           'JOIN profile_tag on (profile_tag.tagged = subscription.subscribed ' .
           'AND profile_tag.tagger = subscription.subscriber) ' .
           'WHERE subscription.subscriber = %d ' .
-          'AND profile_tag.tag = "%s" ' .
+          "AND profile_tag.tag = '%s' " .
           'AND subscription.subscribed != subscription.subscriber ' .
           'ORDER BY subscription.created DESC ';