diff --git a/core/adodb/datadict/datadict-postgres.inc.php b/core/adodb/datadict/datadict-postgres.inc.php
index 83fa455668..d7cf5a663a 100644
--- a/core/adodb/datadict/datadict-postgres.inc.php
+++ b/core/adodb/datadict/datadict-postgres.inc.php
@@ -180,6 +180,7 @@ function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
 	      $tabname = $this->TableName($tabname);
 	      $sql = array();
 	      list($lines,$pkey) = $this->_GenFields($flds);
+	      $set_null = false;
 	      $alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' ';
 	      foreach($lines as $v) {
 	         if ($not_null = preg_match('/NOT NULL/i',$v)) {
@@ -193,10 +194,18 @@ function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
 	         }
 	         
 	         if (preg_match('/^([^ ]+) .*DEFAULT ([^ ]+)/',$v,$matches)) {
+	            $existing = $this->MetaColumns($tabname);
 	            list(,$colname,$default) = $matches;
 	            $v = preg_replace('/^' . preg_quote($colname) . '\s/', '', $v);
-	            $sql[] = $alter . $colname . ' TYPE ' . str_replace('DEFAULT '.$default,'',$v);
-	            $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET DEFAULT ' . $default;
+	            $t = trim(str_replace('DEFAULT '.$default,'',$v));
+	            if ( $existing[strtoupper($colname)]->type == 'bool' && $t == 'INTEGER') {
+		            $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' DROP DEFAULT';
+		            $sql[] = $alter . $colname . ' TYPE ' . $t . ' USING (redirect_delay::BOOL)::INT ';
+		            $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET DEFAULT ' . $default;
+	            } else {
+	            	$sql[] = $alter . $colname . ' TYPE ' . $t;
+	            	$sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET DEFAULT ' . $default;
+	            }	
 	         } 
 	         else {
 	            // drop default?
@@ -205,7 +214,7 @@ function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
 	            $sql[] = $alter . $colname . ' TYPE ' . $rest;
 	         }
 	
-	         list($colname) = explode(' ',$v);
+			//list($colname) = explode(' ',$v);
 	         if ($not_null) {
 	            // this does not error out if the column is already not null
 	            $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET NOT NULL';
@@ -215,6 +224,7 @@ function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='')
 	            $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' DROP NOT NULL';
 	         }
 	      }
+
 	      return $sql;
 	   }