diff --git a/dibi/libs/DibiDatabaseInfo.php b/dibi/libs/DibiDatabaseInfo.php
index 9350f93f..4d8a7b41 100644
--- a/dibi/libs/DibiDatabaseInfo.php
+++ b/dibi/libs/DibiDatabaseInfo.php
@@ -533,7 +533,7 @@ class DibiColumnInfo extends DibiObject
 		if (self::$types === NULL) {
 			self::$types = new DibiLazyStorage(array(__CLASS__, 'detectType'));
 		}
-		return self::$types->{$this->info['nativetype']};
+		return $this->info['nativetype'] ? self::$types->{$this->info['nativetype']} : dibi::TEXT;
 	}
 
 
diff --git a/dibi/libs/DibiLazyStorage.php b/dibi/libs/DibiLazyStorage.php
index ffccb398..33b24da2 100644
--- a/dibi/libs/DibiLazyStorage.php
+++ b/dibi/libs/DibiLazyStorage.php
@@ -59,6 +59,9 @@ final class DibiLazyStorage extends DibiLazyStorageBase
 		if (is_array($nm)) { // preg_replace_callback support
 			$nm = $nm[1];
 		}
+		if ($nm == '') {
+			throw new InvalidStateException('Missing identifier name.');
+		}
 		return $this->$nm = call_user_func($this->getCallback(), $nm);
 	}