diff --git a/test/postgresql.conf.in b/test/postgresql.conf.in
index 124a2d14d44..cb03e9c0f9c 100644
--- a/test/postgresql.conf.in
+++ b/test/postgresql.conf.in
@@ -1,7 +1,7 @@
 # NOTE: any changes here require changes to tsl/test/postgresql.conf. Its prefix
 # must be the same as this file.
 
-autovacuum=true
+autovacuum=false
 datestyle='Postgres, MDY'
 hba_file='@TEST_PG_HBA_FILE@'
 log_destination='@TEST_PG_LOG_DESTINATION@'
diff --git a/tsl/test/postgresql.conf.in b/tsl/test/postgresql.conf.in
index 5957bb664fe..ed6eef0b194 100644
--- a/tsl/test/postgresql.conf.in
+++ b/tsl/test/postgresql.conf.in
@@ -1,6 +1,6 @@
 # This section has to be equivalent to test/postgresql.conf
 
-autovacuum=true
+autovacuum=false
 datestyle='Postgres, MDY'
 hba_file='@TEST_PG_HBA_FILE@'
 log_destination='@TEST_PG_LOG_DESTINATION@'