Index: branches/5.2.x/core/install.php
===================================================================
--- branches/5.2.x/core/install.php
+++ branches/5.2.x/core/install.php
@@ -299,6 +299,11 @@
 							break;
 						}
 					}
+
+					if ( !$this->errorMessage && $this->toolkit->systemConfig->get('DBType', 'Database') == 'mysql' ) {
+						$this->toolkit->systemConfig->set('DBType', 'Database', 'mysqli');
+						$this->toolkit->systemConfig->save();
+					}
 					break;
 
 				case 'clean_db':