diff --git a/resources/classes/database.php b/resources/classes/database.php
index 1602aabee8..8cf1f64288 100644
--- a/resources/classes/database.php
+++ b/resources/classes/database.php
@@ -666,7 +666,7 @@ class database {
 			if ($this->type == "mssql") {
 				$sql = "SELECT * FROM sys.Tables order by name asc";
 			}
-			$prep_statement = $this->db->prepare(check_sql($sql));
+			$prep_statement = $this->db->prepare($sql);
 			$prep_statement->execute();
 			$tmp = $prep_statement->fetchAll(PDO::FETCH_NAMED);
 			if ($this->type == "pgsql" || $this->type == "sqlite" || $this->type == "mssql") {
@@ -2295,7 +2295,6 @@ class database {
 
 											//run the query and return the results
 											try {
-												//$this->db->query(check_sql($sql));
 												$prep_statement = $this->db->prepare($sql);
 												$prep_statement->execute($params);
 												unset($prep_statement);
@@ -2506,7 +2505,6 @@ class database {
 											try {
 												$prep_statement = $this->db->prepare($sql);
 												$prep_statement->execute($params);
-												//$this->db->query(check_sql($sql));
 												$message["message"] = "OK";
 												$message["code"] = "200";
 												$message["uuid"] = $parent_key_value;
diff --git a/resources/functions.php b/resources/functions.php
index 1cd1270b65..3be6b2de4d 100644
--- a/resources/functions.php
+++ b/resources/functions.php
@@ -127,22 +127,6 @@ if (!function_exists('check_str')) {
 	}
 }
 
-if (!function_exists('check_sql')) {
-	/**
-	 * Alias of trim
-	 *
-	 * @param  string $string
-	 *
-	 * @return void
-	 * @see trim()
-	 * @deprecated 5.0
-	 */
-	function check_sql($string) {
-		trigger_error('check_sql should not be used. Use parameterized queries instead.', E_USER_WARNING);
-		return trim($string); //remove white space
-	}
-}
-
 if (!function_exists('check_cidr')) {
 	/**
 	 * Checks if the $ip_address is within the range of the given $cidr