diff --git a/src/xenia/base/threading_posix.cc b/src/xenia/base/threading_posix.cc
index fbbff7bb3..b768c6872 100644
--- a/src/xenia/base/threading_posix.cc
+++ b/src/xenia/base/threading_posix.cc
@@ -924,10 +924,13 @@ class PosixCondition<Thread> final : public PosixConditionBase {
 
 class PosixWaitHandle {
  public:
-  virtual ~PosixWaitHandle() = default;
+  virtual ~PosixWaitHandle();
   virtual PosixConditionBase& condition() = 0;
 };
 
+// Out-of-line destructor to ensure proper RTTI/vtable emission
+PosixWaitHandle::~PosixWaitHandle() = default;
+
 // This wraps a condition object as our handle because posix has no single
 // native handle for higher level concurrency constructs such as semaphores
 template <typename T>