diff --git a/server/plugins-available/apache2_plugin.inc.php b/server/plugins-available/apache2_plugin.inc.php
index 4f6d2f0c7f259869895cc63f3e28d09464eeb2da..8ff39cab62cbe4f38d90d4b84ecc5fb9195a8ee6 100644
--- a/server/plugins-available/apache2_plugin.inc.php
+++ b/server/plugins-available/apache2_plugin.inc.php
@@ -1234,7 +1234,7 @@ class apache2_plugin {
 				$app->log("Create Let's Encrypt SSL Cert for: $domain", LOGLEVEL_DEBUG);
 				
 				$success = false;
-				$letsencrypt = array_shift( split("\n", `which letsencrypt /root/.local/share/letsencrypt/bin/letsencrypt`) );
+				$letsencrypt = array_shift( explode("\n", `which letsencrypt /root/.local/share/letsencrypt/bin/letsencrypt`) );
 				if(is_executable($letsencrypt)) {
 					$success = $this->_exec($letsencrypt . " auth --text --agree-tos --authenticator webroot --server https://acme-v01.api.letsencrypt.org/directory --rsa-key-size 4096 --email postmaster@$domain --domains $lddomain --webroot-path /usr/local/ispconfig/interface/acme");
 				}
diff --git a/server/plugins-available/nginx_plugin.inc.php b/server/plugins-available/nginx_plugin.inc.php
index ff9af43db2c0adb08969cfa95cd47be820304ec4..ece3cb03b524c551836edc2aac7efea14eee2670 100644
--- a/server/plugins-available/nginx_plugin.inc.php
+++ b/server/plugins-available/nginx_plugin.inc.php
@@ -1312,7 +1312,7 @@ class nginx_plugin {
 				$app->log("Create Let's Encrypt SSL Cert for: $domain", LOGLEVEL_DEBUG);
 				
 				$success = false;
-				$letsencrypt = array_shift( split("\n", `which letsencrypt /root/.local/share/letsencrypt/bin/letsencrypt`) );
+				$letsencrypt = array_shift( explode("\n", `which letsencrypt /root/.local/share/letsencrypt/bin/letsencrypt`) );
 				if(is_executable($letsencrypt)) {
 					$success = $this->_exec($letsencrypt . " auth --text --agree-tos --authenticator webroot --server https://acme-v01.api.letsencrypt.org/directory --rsa-key-size 4096 --email postmaster@$domain --domains $lddomain --webroot-path /usr/local/ispconfig/interface/acme");
 				}