diff --git a/src/manage_sql.c b/src/manage_sql.c
index 7f5182670..93284576a 100644
--- a/src/manage_sql.c
+++ b/src/manage_sql.c
@@ -27930,23 +27930,41 @@ init_v2_delta_iterator (report_t report, iterator_t *results, report_t delta,
                                           "nvts_cols");
 
   extra_with = g_strdup_printf(" comparison AS ("
-    " WITH r1 as (SELECT results.id, description, host, report, port,"
+    " WITH r1a as (SELECT results.id, description, host, report, port,"
     "              severity, nvt, results.qod, results.uuid, hostname," 
     "              path, r1_lateral.new_severity as new_severity "
     "       FROM results "
-    "       LEFT JOIN (SELECT cvss_base, oid AS nvts_oid from nvts)"
+    "       LEFT JOIN (SELECT cvss_base, oid AS nvts_oid FROM nvts)"
     "       AS nvts_cols"
     "       ON nvts_cols.nvts_oid = results.nvt"
     "       %s, LATERAL %s AS r1_lateral" 
     "       WHERE report = %llu),"
-    " r2 as (SELECT results.*, r2_lateral.new_severity AS new_severity" 
+    " r2a as (SELECT results.*, r2_lateral.new_severity AS new_severity" 
     "        FROM results" 
-    "        LEFT JOIN (SELECT cvss_base, oid AS nvts_oid from nvts)"
+    "        LEFT JOIN (SELECT cvss_base, oid AS nvts_oid FROM nvts)"
     "        AS nvts_cols" 
     "        ON nvts_cols.nvts_oid = results.nvt" 
     "        %s, LATERAL %s AS r2_lateral" 
-    "        WHERE report = %llu)"
-    " SELECT r1.id AS result1_id," 
+    "        WHERE report = %llu),"
+    " r1 as (SELECT DISTINCT ON (r1a.id) r1a.*, r2a.id as r2id, row_number() over w1 as r1_rank"
+    "        FROM r1a LEFT JOIN r2a ON r1a.host = r2a.host"
+    "        AND normalize_port(r1a.port) = normalize_port(r2a.port)" 
+    "        AND r1a.nvt = r2a.nvt "
+    "        AND (r1a.new_severity = 0) = (r2a.new_severity = 0)"
+    "        AND (r1a.description = r2a.description)"
+    "        WINDOW w1 AS (PARTITION BY r1a.host, normalize_port(r1a.port),"
+    "                      r1a.nvt, r1a.new_severity = 0, r2a.id is null ORDER BY r2a.id)"
+    "        ORDER BY r1a.id),"
+    " r2 as (SELECT DISTINCT ON (r2a.id) r2a.*, r1a.id as r1id, row_number() over w2 as r2_rank"
+    "        FROM r2a LEFT JOIN r1a ON r2a.host = r1a.host"
+    "        AND normalize_port(r2a.port) = normalize_port(r1a.port)" 
+    "        AND r2a.nvt = r1a.nvt "
+    "        AND (r2a.new_severity = 0) = (r1a.new_severity = 0)"
+    "        AND (r2a.description = r1a.description)"
+    "        WINDOW w2 AS (PARTITION BY r2a.host, normalize_port(r2a.port),"
+    "                      r2a.nvt, r2a.new_severity = 0, r1a.id is null ORDER BY r1a.id)"
+    "        ORDER BY r2a.id)"
+    " (SELECT r1.id AS result1_id," 
     " r2.id AS result2_id," 
     " compare_results("
     "  r1.description,"
@@ -27972,7 +27990,7 @@ init_v2_delta_iterator (report_t report, iterator_t *results, report_t delta,
     " r2.path AS delta_path,"
     " r2.host AS delta_host,"
       RESULT_HOSTNAME_SQL("r2.hostname", "r2.host", "r2.report") 
-      " AS delta_hostname,"
+    "   AS delta_hostname,"
     " r2.nvt_version AS delta_nvt_version"
     " FROM r1"
     " FULL OUTER JOIN r2"
@@ -27980,20 +27998,10 @@ init_v2_delta_iterator (report_t report, iterator_t *results, report_t delta,
     " AND normalize_port(r1.port) = normalize_port(r2.port)" 
     " AND r1.nvt = r2.nvt "
     " AND (r1.new_severity = 0) = (r2.new_severity = 0)"
-    " AND (r1.description = r2.description"
-    "      OR NOT EXISTS (SELECT * FROM r2"
-    "                     WHERE r1.description = r2.description"
-    "                     AND r1.host = r2.host" 
-    "                     AND normalize_port(r1.port) = normalize_port(r2.port)"
-    "                     AND r1.nvt = r2.nvt"
-    "                     AND (r1.new_severity = 0) = (r2.new_severity = 0))"
-    "      OR NOT EXISTS (SELECT * FROM r1" 
-    "                     WHERE r1.description = r2.description"
-    "                     AND r1.host = r2.host" 
-    "                     AND normalize_port(r1.port) = normalize_port(r2.port)"
-    "                     AND r1.nvt = r2.nvt"
-    "                     AND (r1.new_severity = 0) = (r2.new_severity = 0)))"  
-    " )",
+    " AND ((r1id IS NULL AND r2id IS NULL) OR"
+    "      r2id = r2.id OR r1id = r1.id)"
+    " AND r1_rank = r2_rank"
+    " ) ) ",
     opts_tables,
     with_lateral,
     report,