diff --git a/security/acme-client/pkg-descr b/security/acme-client/pkg-descr
index 2a5039e66..2a4ab7279 100644
--- a/security/acme-client/pkg-descr
+++ b/security/acme-client/pkg-descr
@@ -8,6 +8,9 @@ WWW: https://github.com/acmesh-official/acme.sh
 Plugin Changelog
 ================
 
+Fixed:
+* proc_open(): Argument #2 ($descriptor_spec) must be of type array
+
 4.0
 
 NOTE: This is a new major release with backwards-incompatible changes.
diff --git a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeAutomation/Base.php b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeAutomation/Base.php
index f85a23d14..138d64d81 100644
--- a/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeAutomation/Base.php
+++ b/security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/LeAutomation/Base.php
@@ -129,10 +129,9 @@ abstract class Base extends \OPNsense\AcmeClient\LeCommon
           . ' '
           . '--deploy '
           . implode(' ', $this->acme_args);
-        LeUtils::log_debug('running acme.sh command: ' . (string)$acmecmd, $this->debug);
-        $proc = proc_open($acmecmd, $proc_desc, $proc_pipes, null, $proc_env);
 
         // Run acme.sh command
+        LeUtils::log_debug('running acme.sh command: ' . (string)$acmecmd, $this->debug);
         $result = LeUtils::run_shell_command($acmecmd, $proc_env);
 
         // acme.sh records the last used deploy hook and would automatically