diff --git a/dibi/drivers/firebird.php b/dibi/drivers/firebird.php
index 9910b693..fcccf2c4 100644
--- a/dibi/drivers/firebird.php
+++ b/dibi/drivers/firebird.php
@@ -261,7 +261,7 @@ class DibiFirebirdDriver extends DibiObject implements IDibiDriver
 			return $value;
 
 		case dibi::BOOL:
-			return $value ? -1 : 0;
+			return $value ? 1 : 0;
 
 		case dibi::DATE:
 			return date("'Y-m-d'", $value);
diff --git a/dibi/drivers/mssql.php b/dibi/drivers/mssql.php
index 179a0d8e..a9106d71 100644
--- a/dibi/drivers/mssql.php
+++ b/dibi/drivers/mssql.php
@@ -214,7 +214,7 @@ class DibiMsSqlDriver extends DibiObject implements IDibiDriver
 			return '[' . str_replace('.', '].[', $value) . ']';
 
 		case dibi::BOOL:
-			return $value ? -1 : 0;
+			return $value ? 1 : 0;
 
 		case dibi::DATE:
 			return date("'Y-m-d'", $value);
diff --git a/dibi/drivers/mssql2005.php b/dibi/drivers/mssql2005.php
index 40971b8c..92b85ee8 100644
--- a/dibi/drivers/mssql2005.php
+++ b/dibi/drivers/mssql2005.php
@@ -216,7 +216,7 @@ class DibiMsSql2005Driver extends DibiObject implements IDibiDriver
 			return '[' . str_replace('.', '].[', $value) . ']';
 
 		case dibi::BOOL:
-			return $value ? -1 : 0;
+			return $value ? 1 : 0;
 
 		case dibi::DATE:
 			return date("'Y-m-d'", $value);
diff --git a/dibi/drivers/odbc.php b/dibi/drivers/odbc.php
index 2a9fc525..2a169d92 100644
--- a/dibi/drivers/odbc.php
+++ b/dibi/drivers/odbc.php
@@ -221,7 +221,7 @@ class DibiOdbcDriver extends DibiObject implements IDibiDriver
 			return '[' . str_replace('.', '].[', $value) . ']';
 
 		case dibi::BOOL:
-			return $value ? -1 : 0;
+			return $value ? 1 : 0;
 
 		case dibi::DATE:
 			return date("#m/d/Y#", $value);
diff --git a/dibi/libs/DibiDatabaseInfo.php b/dibi/libs/DibiDatabaseInfo.php
index 1c8f31d2..8bb78cae 100644
--- a/dibi/libs/DibiDatabaseInfo.php
+++ b/dibi/libs/DibiDatabaseInfo.php
@@ -477,6 +477,7 @@ class DibiColumnInfo extends DibiObject
 	{
 		static $patterns = array(
 			'BYTEA|BLOB|BIN' => dibi::BINARY,
+			'TEXT|CHAR' => dibi::TEXT,
 			'BYTE|COUNTER|SERIAL|INT|LONG' => dibi::INTEGER,
 			'CURRENCY|REAL|MONEY|FLOAT|DOUBLE|DECIMAL|NUMERIC|NUMBER' => dibi::FLOAT,
 			'^TIME$' => dibi::TIME,