diff --git a/system/database/drivers/postgre/postgre_result.php b/system/database/drivers/postgre/postgre_result.php
index 2e1e003..78b9a60 100644
--- a/system/database/drivers/postgre/postgre_result.php
+++ b/system/database/drivers/postgre/postgre_result.php
@@ -90,7 +90,7 @@
 			$F->name 		= pg_field_name($this->result_id, $i);
 			$F->type 		= pg_field_type($this->result_id, $i);
 			$F->max_length	= pg_field_size($this->result_id, $i);
-			$F->primary_key = $i == 0;
+			$F->primary_key = 0;
 			$F->default		= '';
 
 			$retval[] = $F;