diff --git a/src/test/regress/bin/normalize.sed b/src/test/regress/bin/normalize.sed
index e4669247c..7eeb64dc4 100644
--- a/src/test/regress/bin/normalize.sed
+++ b/src/test/regress/bin/normalize.sed
@@ -78,3 +78,10 @@ s/_id_other_column_ref_fkey/_id_fkey/g
 
 # intermediate_results
 s/(ERROR.*)pgsql_job_cache\/([0-9]+_[0-9]+_[0-9]+)\/(.*).data/\1pgsql_job_cache\/xx_x_xxx\/\3.data/g
+
+## Plan numbers are not very stable, so we normalize those
+## subplan numbers are quite stable so we keep those
+#s/DEBUG:  Plan [0-9]+/DEBUG:  Plan XXX/g
+#s/generating subplan [0-9]+\_/generating subplan XXX\_/g
+#s/read_intermediate_result\('[0-9]+_/read_intermediate_result('XXX_/g
+#s/Subplan [0-9]+\_/Subplan XXX\_/g