diff --git a/rpcs3/Emu/ARMv7/Modules/sceLibKernel.cpp b/rpcs3/Emu/ARMv7/Modules/sceLibKernel.cpp
index de3618d275..d97165b960 100644
--- a/rpcs3/Emu/ARMv7/Modules/sceLibKernel.cpp
+++ b/rpcs3/Emu/ARMv7/Modules/sceLibKernel.cpp
@@ -31,14 +31,7 @@ s32 sceKernelGetMemBlockInfoByAddr(vm::ptr<void> vbase, vm::ptr<SceKernelMemBloc
 	throw EXCEPTION("");
 }
 
-s32 sceKernelCreateThread(
-	vm::cptr<char> pName,
-	vm::ptr<SceKernelThreadEntry> entry,
-	s32 initPriority,
-	u32 stackSize,
-	u32 attr,
-	s32 cpuAffinityMask,
-	vm::cptr<SceKernelThreadOptParam> pOptParam)
+s32 sceKernelCreateThread(vm::cptr<char> pName, vm::ptr<SceKernelThreadEntry> entry, s32 initPriority, u32 stackSize, u32 attr, s32 cpuAffinityMask, vm::cptr<SceKernelThreadOptParam> pOptParam)
 {
 	sceLibKernel.Warning("sceKernelCreateThread(pName=*0x%x, entry=*0x%x, initPriority=%d, stackSize=0x%x, attr=0x%x, cpuAffinityMask=0x%x, pOptParam=*0x%x)",
 		pName, entry, initPriority, stackSize, attr, cpuAffinityMask, pOptParam);
@@ -219,9 +212,22 @@ s32 sceKernelGetSystemInfo(vm::ptr<SceKernelSystemInfo> pInfo)
 
 s32 sceKernelGetThreadmgrUIDClass(s32 uid)
 {
-	sceLibKernel.Todo("sceKernelGetThreadmgrUIDClass(uid=0x%x)", uid);
+	sceLibKernel.Error("sceKernelGetThreadmgrUIDClass(uid=0x%x)", uid);
 
-	throw EXCEPTION("");
+	const auto type = idm::get_type(uid);
+
+	if (!type)
+	{
+		return SCE_KERNEL_ERROR_INVALID_UID;
+	}
+
+	if (*type == typeid(ARMv7Thread)) return SCE_KERNEL_THREADMGR_UID_CLASS_THREAD;
+	if (*type == typeid(psv_semaphore_t)) return SCE_KERNEL_THREADMGR_UID_CLASS_SEMA;
+	if (*type == typeid(psv_event_flag_t)) return SCE_KERNEL_THREADMGR_UID_CLASS_EVENT_FLAG;
+	if (*type == typeid(psv_mutex_t)) return SCE_KERNEL_THREADMGR_UID_CLASS_MUTEX;
+	if (*type == typeid(psv_cond_t)) return SCE_KERNEL_THREADMGR_UID_CLASS_COND;
+	
+	throw EXCEPTION("Unknown UID class (type='%s')", type->name());
 }
 
 s32 sceKernelChangeThreadVfpException(s32 clearMask, s32 setMask)
diff --git a/rpcs3/Emu/IdManager.h b/rpcs3/Emu/IdManager.h
index 28f1058248..47aca64a5a 100644
--- a/rpcs3/Emu/IdManager.h
+++ b/rpcs3/Emu/IdManager.h
@@ -33,7 +33,7 @@ namespace idm
 	// reinitialize ID manager
 	void clear();
 
-	// check if ID exists
+	// check if ID of specified type exists
 	template<typename T> bool check(u32 id)
 	{
 		extern std::mutex g_id_mutex;
@@ -41,9 +41,22 @@ namespace idm
 
 		std::lock_guard<std::mutex> lock(g_id_mutex);
 
-		const auto f = g_id_map.find(id);
+		const auto found = g_id_map.find(id);
 
-		return f != g_id_map.end() && f->second.info == typeid(T);
+		return found != g_id_map.end() && found->second.info == typeid(T);
+	}
+
+	// check if ID exists and return its type or nullptr
+	inline const std::type_info* get_type(u32 id)
+	{
+		extern std::mutex g_id_mutex;
+		extern std::unordered_map<u32, ID_data_t> g_id_map;
+
+		std::lock_guard<std::mutex> lock(g_id_mutex);
+
+		const auto found = g_id_map.find(id);
+
+		return found == g_id_map.end() ? nullptr : &found->second.info;
 	}
 
 	// must be called from the constructor called through make() or make_ptr() to get further ID of current object