diff --git a/libsrc/Wi/sqlgen.c b/libsrc/Wi/sqlgen.c
index 5c582e41a0..1f39c30d76 100644
--- a/libsrc/Wi/sqlgen.c
+++ b/libsrc/Wi/sqlgen.c
@@ -1630,7 +1630,8 @@ sqlg_hash_source (sqlo_t * so, df_elt_t * tb_dfe, dk_set_t * pre_code)
 		}
 	      else
 		{
-		  hs->hs_ref_slots[nth]->ssl_sqt.sqt_col_dtp = ssl->ssl_sqt.sqt_col_dtp; /* hash filler col must have this set */
+                  if (NULL == hs->hs_ref_slots[nth]->ssl_column) /* if there is a col col_dtp is set already and dc fill fn for it, do next otherwise */
+                    hs->hs_ref_slots[nth]->ssl_sqt.sqt_col_dtp = ssl->ssl_sqt.sqt_col_dtp; /* hash filler col must have this set */
 		  if (!tb_dfe->_.table.ot->ot_is_outer)
 	    ssl_alias (ssl, hs->hs_ref_slots[nth]);
 	  else