diff --git a/lustre/tests/acceptance-metadata-double.sh b/lustre/tests/acceptance-metadata-double.sh
index c8d5dd858de0f924d14479e9d3c182e650fe7bef..707198a76d8418213568d6574732cee2e2afa653 100644
--- a/lustre/tests/acceptance-metadata-double.sh
+++ b/lustre/tests/acceptance-metadata-double.sh
@@ -31,7 +31,7 @@ debug_client_on()
 
 debug_client_off()
 {
-	echo 0 > /proc/sys/portals/debug
+	echo 0x3f0400 > /proc/sys/portals/debug
 }
 
 MNT=${MNT:-/mnt/lustre}
diff --git a/lustre/tests/acceptance-metadata-single.sh b/lustre/tests/acceptance-metadata-single.sh
index 3366d9c7c04575cbef01ab53a1eefb2ab7bd8a57..306ce37c3b513320b33942ddfa95a263ea4405d8 100644
--- a/lustre/tests/acceptance-metadata-single.sh
+++ b/lustre/tests/acceptance-metadata-single.sh
@@ -31,7 +31,7 @@ debug_client_on()
 
 debug_client_off()
 {
-	echo 0 > /proc/sys/portals/debug
+	echo 0x3f0400 > /proc/sys/portals/debug
 }
 
 MNT=${MNT:-/mnt/lustre}