diff --git a/server/plugins-available/nginx_plugin.inc.php b/server/plugins-available/nginx_plugin.inc.php
index 7d95671b70896f4bbb33fb6fa32d080784863889..ada8e71c3cd535a1d62f8759a1ab9bc0d6ac2b1c 100644
--- a/server/plugins-available/nginx_plugin.inc.php
+++ b/server/plugins-available/nginx_plugin.inc.php
@@ -1632,8 +1632,8 @@ class nginx_plugin {
 		$vhost_data['logging'] = $web_config['logging'];
 
 		// Provide TLS 1.3 support if Nginx version is >= 1.13.0 and when it was linked against OpenSSL(>=1.1.1) at build time and when it was linked against OpenSSL(>=1.1.1) at runtime.
-		$nginx_openssl_build_ver = $app->system->exec_safe('nginx -V 2>&1 | grep OpenSSL | sed \'s/.*built\([a-zA-Z ]*\)OpenSSL \([0-9.]*\).*/\2/\'');
-		$nginx_openssl_running_ver = $app->system->exec_safe('nginx -V 2>&1 | grep \'running with\' | sed \'s/.*running\([a-zA-Z ]*\)OpenSSL \([0-9.]*\).*/\2/\'');
+		$nginx_openssl_build_ver = $app->system->exec_safe('nginx -V 2>&1 | grep \'built with OpenSSL\' | sed \'s/.*built\([a-zA-Z ]*\)OpenSSL \([0-9.]*\).*/\2/\'');
+		$nginx_openssl_running_ver = $app->system->exec_safe('nginx -V 2>&1 | grep \'running with OpenSSL\' | sed \'s/.*running\([a-zA-Z ]*\)OpenSSL \([0-9.]*\).*/\2/\'');
 		if(version_compare($app->system->getnginxversion(true), '1.13.0', '>=')
 			&& version_compare($nginx_openssl_build_ver, '1.1.1', '>=')
 			&& (empty($nginx_openssl_running_ver) || version_compare($nginx_openssl_running_ver, '1.1.1', '>='))) {