diff --git a/lib/modules/Sql.pmod/pgsql_util.pmod b/lib/modules/Sql.pmod/pgsql_util.pmod
index 3cfb4a33b226848526ebb0f7e0460751dce64335..d63975ff88d45e0207798391522e07e970b2f3c9 100644
--- a/lib/modules/Sql.pmod/pgsql_util.pmod
+++ b/lib/modules/Sql.pmod/pgsql_util.pmod
@@ -636,6 +636,7 @@ class sql_result {
 
   final string _portalname;
 
+  private int index;
   private int inflight;
   int portalbuffersize;
   private Thread.Mutex closemux;