diff --git a/lib/libimhex/source/api/task_manager.cpp b/lib/libimhex/source/api/task_manager.cpp
index a51a6a541..db07f43e7 100644
--- a/lib/libimhex/source/api/task_manager.cpp
+++ b/lib/libimhex/source/api/task_manager.cpp
@@ -380,6 +380,7 @@ namespace hex {
         s_deferredCalls.clear();
         s_onceDeferredCalls.clear();
         s_tasksFinishedCallbacks.clear();
+        s_taskCompletionCallbacks.clear();
     }
 
     TaskHolder TaskManager::createTask(const UnlocalizedString &unlocalizedName, u64 maxValue, bool background, bool blocking, std::function<void(Task&)> function) {