diff --git a/libsession-util/src/main/cpp/group_info.cpp b/libsession-util/src/main/cpp/group_info.cpp
index 3addb1648..13df97fd1 100644
--- a/libsession-util/src/main/cpp/group_info.cpp
+++ b/libsession-util/src/main/cpp/group_info.cpp
@@ -1,14 +1,16 @@
 #include <jni.h>
 #include "group_info.h"
+#include "session/config/groups/info.hpp"
 
 
 extern "C"
 JNIEXPORT jobject JNICALL
 Java_network_loki_messenger_libsession_1util_GroupInfoConfig_newInstance__Ljava_lang_String_2(
         JNIEnv *env, jobject thiz, jstring pub_key_hex) {
-    auto pub_key = env->GetStringUTFChars(pub_key_hex, nullptr);
-
-    env->ReleaseStringUTFChars(pub_key_hex, pub_key);
+    std::lock_guard guard{util::util_mutex_};
+    auto pub_key_string = util::ustring_from_jstring(env, pub_key_hex);
+    auto group_info = session::config::groups::Info(pub_key_string, std::nullopt, std::nullopt);
+    // TODO
 }
 
 extern "C"
diff --git a/libsession-util/src/main/cpp/util.cpp b/libsession-util/src/main/cpp/util.cpp
index 69469eac1..e856c0fd3 100644
--- a/libsession-util/src/main/cpp/util.cpp
+++ b/libsession-util/src/main/cpp/util.cpp
@@ -23,6 +23,15 @@ namespace util {
         return st;
     }
 
+    session::ustring ustring_from_jstring(JNIEnv* env, jstring string) {
+        size_t len = env->GetStringUTFLength(string);
+        auto chars = env->GetStringUTFChars(string, nullptr);
+
+        session::ustring st{reinterpret_cast<const unsigned char *>(chars), len};
+        env->ReleaseStringUTFChars(string, chars);
+        return st;
+    }
+
     jobject serialize_user_pic(JNIEnv *env, session::config::profile_pic pic) {
         jclass returnObjectClass = env->FindClass("network/loki/messenger/libsession_util/util/UserPic");
         jmethodID constructor = env->GetMethodID(returnObjectClass, "<init>", "(Ljava/lang/String;[B)V");
diff --git a/libsession-util/src/main/cpp/util.h b/libsession-util/src/main/cpp/util.h
index 9348e8bd7..abde49bb0 100644
--- a/libsession-util/src/main/cpp/util.h
+++ b/libsession-util/src/main/cpp/util.h
@@ -13,6 +13,7 @@ namespace util {
     extern std::mutex util_mutex_;
     jbyteArray bytes_from_ustring(JNIEnv* env, session::ustring_view from_str);
     session::ustring ustring_from_bytes(JNIEnv* env, jbyteArray byteArray);
+    session::ustring ustring_from_jstring(JNIEnv* env, jstring string);
     jobject serialize_user_pic(JNIEnv *env, session::config::profile_pic pic);
     std::pair<jstring, jbyteArray> deserialize_user_pic(JNIEnv *env, jobject user_pic);
     jobject serialize_base_community(JNIEnv *env, const session::config::community& base_community);