diff --git a/core/Command/Db/ConvertType.php b/core/Command/Db/ConvertType.php
index bd26c5e515..631972150e 100644
--- a/core/Command/Db/ConvertType.php
+++ b/core/Command/Db/ConvertType.php
@@ -383,6 +383,9 @@ class ConvertType extends Command implements CompletionAwareInterface {
 			case Type::TEXT:
 				$this->columnTypes[$tableName][$columnName] = IQueryBuilder::PARAM_LOB;
 				break;
+			case Type::BOOLEAN:
+				$this->columnTypes[$tableName][$columnName] = IQueryBuilder::PARAM_BOOL;
+				break;
 			default:
 				$this->columnTypes[$tableName][$columnName] = false;
 		}