diff --git a/src/bin/pg_rewind/RewindTest.pm b/src/bin/pg_rewind/RewindTest.pm
index e6a5b9b..b5bea31 100644
--- a/src/bin/pg_rewind/RewindTest.pm
+++ b/src/bin/pg_rewind/RewindTest.pm
@@ -240,6 +240,7 @@ sub run_pg_rewind
 		# Do rewind using a remote connection as source
 		my $result =
 			run(['pg_rewind',
+				 "--debug",
 				 "--source-server", "port=$port_standby dbname=postgres",
 				 "--target-pgdata=$test_master_datadir"],
 				'>>', $log_path, '2>&1');