diff --git a/publish/login.php b/publish/login.php
index 10e3375..fc29ab3 100644
--- a/publish/login.php
+++ b/publish/login.php
@@ -17,7 +17,7 @@ if (isset($_SESSION['editor'])) {
   open_db('open');
 
   $username = (string)($_POST['username'] ?? '');
-  $query = "SELECT * FROM $table WHERE username LIKE ? LIMIT 1";
+  $query = "SELECT * FROM $table WHERE username = ? LIMIT 1";
   $getid = $db->execute_query($query, array($username)) or die("Query failed: ".$db->error);
   $row = $getid->fetch_assoc();
 
diff --git a/session.lib.php b/session.lib.php
index 9f0f6b2..cc2f80d 100644
--- a/session.lib.php
+++ b/session.lib.php
@@ -36,7 +36,7 @@ function check_persistent_login() {
   $cookie_data = (string)$_COOKIE['PersistentAuth'];
   list($username, $key) = explode("|", $cookie_data, 2) + array('', '');
 
-  $query = "SELECT * FROM $table WHERE username LIKE ? LIMIT 1";
+  $query = "SELECT * FROM $table WHERE username = ? LIMIT 1";
   $getid = $db->execute_query($query, array($username)) or die("Query failed: ".$db->error);
   $row = $getid->fetch_assoc();
   open_db('close');
@@ -86,7 +86,7 @@ function delete_persistent_login() {
   list($username, $key) = explode("|", $cookie_data, 2) + array('', '');
 
   // Remove this session key from the database
-  $query = "DELETE FROM $table WHERE username LIKE ? AND session LIKE ?";
+  $query = "DELETE FROM $table WHERE username = ? AND session = ?";
   $db->execute_query($query, array($username, $key)) or die("Query failed: ".$db->error);
 
   // Reap old sessions