diff --git a/auth-plugin.c b/auth-plugin.c
index a1c23ce..fc45f26 100644
--- a/auth-plugin.c
+++ b/auth-plugin.c
@@ -38,15 +38,13 @@ int mosquitto_auth_plugin_init(void **user_data, struct mosquitto_auth_opt *auth
 
   GoInt32 opts_count = auth_opt_count;
   
-  GoString keys[auth_opt_count];
-  GoString values[auth_opt_count];
+  char *keys[auth_opt_count];
+  char *values[auth_opt_count];
   int i;
   struct mosquitto_auth_opt *o;
   for (i = 0, o = auth_opts; i < auth_opt_count; i++, o++) {
-    GoString opt_key = {o->key, strlen(o->key)};
-    GoString opt_value = {o->value, strlen(o->value)};
-    keys[i] = opt_key;
-    values[i] = opt_value;
+    keys[i] = o->key;
+    values[i] = o->value;
   }
 
   GoSlice keysSlice = {keys, auth_opt_count, auth_opt_count};
@@ -55,9 +53,8 @@ int mosquitto_auth_plugin_init(void **user_data, struct mosquitto_auth_opt *auth
   char versionArray[10];
   sprintf(versionArray, "%i.%i.%i", LIBMOSQUITTO_MAJOR, LIBMOSQUITTO_MINOR, LIBMOSQUITTO_REVISION);
 
-  GoString version = {versionArray, strlen(versionArray)};
 
-  AuthPluginInit(keysSlice, valuesSlice, opts_count, version);
+  AuthPluginInit(keysSlice, valuesSlice, opts_count, versionArray);
   return MOSQ_ERR_SUCCESS;
 }
 
@@ -93,11 +90,7 @@ int mosquitto_auth_unpwd_check(void *userdata, const char *username, const char
     return MOSQ_ERR_AUTH;
   }
 
-  GoString go_username = {username, strlen(username)};
-  GoString go_password = {password, strlen(password)};
-  GoString go_clientid = {clientid, strlen(clientid)};
-
-  GoUint8 ret = AuthUnpwdCheck(go_username, go_password, go_clientid);
+  GoUint8 ret = AuthUnpwdCheck((char *)username, (char *)password, (char *)clientid);
 
   switch (ret)
   {
@@ -135,12 +128,7 @@ int mosquitto_auth_acl_check(void *userdata, const char *clientid, const char *u
     return MOSQ_ERR_ACL_DENIED;
   }
 
-  GoString go_clientid = {clientid, strlen(clientid)};
-  GoString go_username = {username, strlen(username)};
-  GoString go_topic = {topic, strlen(topic)};
-  GoInt32 go_access = access;
-
-  GoUint8 ret = AuthAclCheck(go_clientid, go_username, go_topic, go_access);
+  GoUint8 ret = AuthAclCheck((char *)clientid, (char *)username, (char *)topic, access);
 
   switch (ret)
   {
diff --git a/go-auth.go b/go-auth.go
index 2768528..32bac7c 100644
--- a/go-auth.go
+++ b/go-auth.go
@@ -38,7 +38,7 @@ var authOpts map[string]string //Options passed by mosquitto.
 var authPlugin AuthPlugin      //General struct with options and conf.
 
 //export AuthPluginInit
-func AuthPluginInit(keys []string, values []string, authOptsNum int, version string) {
+func AuthPluginInit(keys []*C.char, values []*C.char, authOptsNum int, version *C.char) {
 	log.SetFormatter(&log.TextFormatter{
 		FullTimestamp: true,
 	})
@@ -51,7 +51,7 @@ func AuthPluginInit(keys []string, values []string, authOptsNum int, version str
 
 	authOpts = make(map[string]string)
 	for i := 0; i < authOptsNum; i++ {
-		authOpts[keys[i]] = values[i]
+		authOpts[C.GoString(keys[i])] = C.GoString(values[i])
 	}
 
 	if retryCount, ok := authOpts["retry_count"]; ok {
@@ -104,7 +104,7 @@ func AuthPluginInit(keys []string, values []string, authOptsNum int, version str
 
 	var err error
 
-	authPlugin.backends, err = bes.Initialize(authOpts, authPlugin.logLevel, version)
+	authPlugin.backends, err = bes.Initialize(authOpts, authPlugin.logLevel, C.GoString(version))
 	if err != nil {
 		log.Fatalf("error initializing backends: %s", err)
 	}
@@ -276,12 +276,12 @@ func setCache(authOpts map[string]string) {
 }
 
 //export AuthUnpwdCheck
-func AuthUnpwdCheck(username, password, clientid string) uint8 {
+func AuthUnpwdCheck(username, password, clientid *C.char) uint8 {
 	var ok bool
 	var err error
 
 	for try := 0; try <= authPlugin.retryCount; try++ {
-		ok, err = authUnpwdCheck(username, password, clientid)
+		ok, err = authUnpwdCheck(C.GoString(username), C.GoString(password), C.GoString(clientid))
 		if err == nil {
 			break
 		}
@@ -330,12 +330,12 @@ func authUnpwdCheck(username, password, clientid string) (bool, error) {
 }
 
 //export AuthAclCheck
-func AuthAclCheck(clientid, username, topic string, acc int) uint8 {
+func AuthAclCheck(clientid, username, topic *C.char, acc C.int) uint8 {
 	var ok bool
 	var err error
 
 	for try := 0; try <= authPlugin.retryCount; try++ {
-		ok, err = authAclCheck(clientid, username, topic, acc)
+		ok, err = authAclCheck(C.GoString(clientid), C.GoString(username), C.GoString(topic), int(acc))
 		if err == nil {
 			break
 		}