diff --git a/nixos/modules/security/acme.nix b/nixos/modules/security/acme.nix
index 946da92d80e7..092704c6fc3f 100644
--- a/nixos/modules/security/acme.nix
+++ b/nixos/modules/security/acme.nix
@@ -302,15 +302,15 @@ in
                       workdir="$(mktemp -d)"
 
                       # Create CA
-                      openssl genrsa -des3 -passout pass:x -out $workdir/ca.pass.key 2048
-                      openssl rsa -passin pass:x -in $workdir/ca.pass.key -out $workdir/ca.key
+                      openssl genrsa -des3 -passout pass:xxxx -out $workdir/ca.pass.key 2048
+                      openssl rsa -passin pass:xxxx -in $workdir/ca.pass.key -out $workdir/ca.key
                       openssl req -new -key $workdir/ca.key -out $workdir/ca.csr \
                         -subj "/C=UK/ST=Warwickshire/L=Leamington/O=OrgName/OU=Security Department/CN=example.com"
                       openssl x509 -req -days 1 -in $workdir/ca.csr -signkey $workdir/ca.key -out $workdir/ca.crt
 
                       # Create key
-                      openssl genrsa -des3 -passout pass:x -out $workdir/server.pass.key 2048
-                      openssl rsa -passin pass:x -in $workdir/server.pass.key -out $workdir/server.key
+                      openssl genrsa -des3 -passout pass:xxxx -out $workdir/server.pass.key 2048
+                      openssl rsa -passin pass:xxxx -in $workdir/server.pass.key -out $workdir/server.key
                       openssl req -new -key $workdir/server.key -out $workdir/server.csr \
                         -subj "/C=UK/ST=Warwickshire/L=Leamington/O=OrgName/OU=IT Department/CN=example.com"
                       openssl x509 -req -days 1 -in $workdir/server.csr -CA $workdir/ca.crt \