diff --git a/inc/database_mysql.php b/inc/database_mysql.php
index 08deef9..9ab33e9 100644
--- a/inc/database_mysql.php
+++ b/inc/database_mysql.php
@@ -1,6 +1,10 @@
 <?php
 if (!defined('TINYIB_BOARD')) { die(''); }
 
+if (!function_exists('mysql_connect')) {
+	fancyDie("MySQL library is not installed");
+}
+
 $link = mysql_connect(TINYIB_DBHOST, TINYIB_DBUSERNAME, TINYIB_DBPASSWORD);
 if (!$link) {
 	fancyDie("Could not connect to database: " . mysql_error());
diff --git a/inc/database_sqlite.php b/inc/database_sqlite.php
index f72bd31..ce35a91 100644
--- a/inc/database_sqlite.php
+++ b/inc/database_sqlite.php
@@ -1,6 +1,10 @@
 <?php
 if (!defined('TINYIB_BOARD')) { die(''); }
 
+if (!function_exists('sqlite_open')) {
+	fancyDie("SQLite library is not installed");
+}
+
 if (!$db = sqlite_open('tinyib.db', 0666, $error)) {
 	fancyDie("Could not connect to database: " . $error);
 }