diff --git a/Common/Thread/ThreadManager.cpp b/Common/Thread/ThreadManager.cpp
index 8ac9ac0a22..4177b9f44b 100644
--- a/Common/Thread/ThreadManager.cpp
+++ b/Common/Thread/ThreadManager.cpp
@@ -98,7 +98,7 @@ static void WorkerThreadFunc(GlobalThreadContext *global, ThreadContext *thread)
 }
 
 void ThreadManager::Init(int numRealCores, int numLogicalCoresPerCpu) {
-	if (!global_->threads_.empty()) {
+	if (IsInitialized()) {
 		Teardown();
 	}
 
@@ -118,6 +118,8 @@ void ThreadManager::Init(int numRealCores, int numLogicalCoresPerCpu) {
 }
 
 void ThreadManager::EnqueueTask(Task *task, TaskType taskType) {
+	_assert_msg_(IsInitialized(), "ThreadManager not initialized");
+
 	int maxThread;
 	int threadOffset = 0;
 	if (taskType == TaskType::CPU_COMPUTE) {
@@ -158,7 +160,7 @@ void ThreadManager::EnqueueTask(Task *task, TaskType taskType) {
 }
 
 void ThreadManager::EnqueueTaskOnThread(int threadNum, Task *task, TaskType taskType) {
-	_assert_(threadNum >= 0 && threadNum < (int)global_->threads_.size());
+	_assert_msg_(threadNum >= 0 && threadNum < (int)global_->threads_.size(), "Bad threadnum or not initialized");
 	ThreadContext *thread = global_->threads_[threadNum];
 	{
 		std::unique_lock<std::mutex> lock(thread->mutex);
@@ -172,5 +174,9 @@ int ThreadManager::GetNumLooperThreads() const {
 }
 
 void ThreadManager::TryCancelTask(uint64_t taskID) {
-	// Do nothing
+	// Do nothing for now, just let it finish.
+}
+
+bool ThreadManager::IsInitialized() const {
+	return !global_->threads_.empty();
 }
diff --git a/Common/Thread/ThreadManager.h b/Common/Thread/ThreadManager.h
index 822997d921..683451da8e 100644
--- a/Common/Thread/ThreadManager.h
+++ b/Common/Thread/ThreadManager.h
@@ -48,6 +48,8 @@ public:
 	void EnqueueTaskOnThread(int threadNum, Task *task, TaskType taskType);
 	void Teardown();
 
+	bool IsInitialized() const;
+
 	// Currently does nothing. It will always be best-effort - maybe it cancels,
 	// maybe it doesn't. Note that the id is the id() returned by the task. You need to make that
 	// something meaningful yourself.
@@ -58,7 +60,8 @@ public:
 	int GetNumLooperThreads() const;
 
 private:
-	GlobalThreadContext *global_ = nullptr;
+	// This is always pointing to a context, initialized in the constructor.
+	GlobalThreadContext *global_;
 
 	int numThreads_ = 0;
 	int numComputeThreads_ = 0;