diff --git a/testing/hosts/default/etc/ssh/sshd_config b/testing/hosts/default/etc/ssh/sshd_config
index cfe0444c3..1977d8615 100644
--- a/testing/hosts/default/etc/ssh/sshd_config
+++ b/testing/hosts/default/etc/ssh/sshd_config
@@ -13,5 +13,4 @@ PrintLastLog no
 UsePAM no
 AcceptEnv LANG LC_*
 AcceptEnv LEAK_DETECTIVE_*
-SetEnv LEAK_DETECTIVE_IGNORE_UNKNOWN=1
 Subsystem	sftp	/usr/lib/openssh/sftp-server
diff --git a/testing/hosts/default/etc/systemd/system.conf.d/99-ignore-unknown-memory.conf b/testing/hosts/default/etc/systemd/system.conf.d/99-ignore-unknown-memory.conf
deleted file mode 100644
index acf2eee6d..000000000
--- a/testing/hosts/default/etc/systemd/system.conf.d/99-ignore-unknown-memory.conf
+++ /dev/null
@@ -1,2 +0,0 @@
-[Manager]
-DefaultEnvironment=LEAK_DETECTIVE_IGNORE_UNKNOWN=1