diff -urNp strongswan-5.2.0/src/libstrongswan/plugins/openssl/openssl_plugin.c strongswan-5.2.0-current/src/libstrongswan/plugins/openssl/openssl_plugin.c
--- strongswan-5.2.0/src/libstrongswan/plugins/openssl/openssl_plugin.c	2014-06-05 03:50:30.000000000 -0400
+++ strongswan-5.2.0-current/src/libstrongswan/plugins/openssl/openssl_plugin.c	2014-09-18 16:12:39.171174020 -0400
@@ -70,6 +70,7 @@ struct private_openssl_plugin_t {
  */
 static mutex_t **mutex = NULL;
 
+static bool multi_thread = TRUE;
 /**
  * Locking callback for static locks
  */
@@ -507,7 +508,10 @@ METHOD(plugin_t, destroy, void,
 	ENGINE_cleanup();
 #endif /* OPENSSL_NO_ENGINE */
 	CRYPTO_cleanup_all_ex_data();
+	if(multi_thread)
+	{
 	threading_cleanup();
+	}
 	ERR_free_strings();
 
 	free(this);
@@ -523,6 +527,8 @@ plugin_t *openssl_plugin_create()
 
 	fips_mode = lib->settings->get_int(lib->settings,
 							"%s.plugins.openssl.fips_mode", FIPS_MODE, lib->ns);
+	multi_thread = lib->settings->get_bool(lib->settings,
+                                                        "%s.plugins.openssl.multi_thread", TRUE, lib->ns);
 #ifdef OPENSSL_FIPS
 	if (fips_mode)
 	{
@@ -551,7 +557,10 @@ plugin_t *openssl_plugin_create()
 		},
 	);
 
+	if (multi_thread) 
+	{
 	threading_init();
+	}
 
 	OPENSSL_config(NULL);
 	OpenSSL_add_all_algorithms();