diff --git a/Include/Aurora/Runtime.hpp b/Include/Aurora/Runtime.hpp
index 4f1fc118..da24346b 100644
--- a/Include/Aurora/Runtime.hpp
+++ b/Include/Aurora/Runtime.hpp
@@ -136,6 +136,7 @@ using AuRWLock = AuThreadPrimitives::RWLock;
 using AuCond = AuThreadPrimitives::ConditionVariable;
 using AuCondMutex = AuThreadPrimitives::ConditionMutex;
 using AuSpinLock = AuThreadPrimitives::SpinLock;
+using AuCondEx = AuThreadPrimitives::FlexibleConditionVariable;
 
 using AuFutexMutex = AuThreading::Waitables::FutexWaitable;
 using AuFutexSemaphore = AuThreading::Waitables::FutexSemaphoreWaitable;