diff --git a/scwx-qt/source/scwx/qt/manager/placefile_manager.cpp b/scwx-qt/source/scwx/qt/manager/placefile_manager.cpp
index 16aefcdd..77344524 100644
--- a/scwx-qt/source/scwx/qt/manager/placefile_manager.cpp
+++ b/scwx-qt/source/scwx/qt/manager/placefile_manager.cpp
@@ -45,7 +45,7 @@ public:
    class PlacefileRecord;
 
    explicit Impl(PlacefileManager* self) : self_ {self} {}
-   ~Impl() {}
+   ~Impl() { threadPool_.join(); }
 
    void InitializePlacefileSettings();
    void ReadPlacefileSettings();
diff --git a/scwx-qt/source/scwx/qt/map/placefile_layer.cpp b/scwx-qt/source/scwx/qt/map/placefile_layer.cpp
index 7e9303f4..f29d63e4 100644
--- a/scwx-qt/source/scwx/qt/map/placefile_layer.cpp
+++ b/scwx-qt/source/scwx/qt/map/placefile_layer.cpp
@@ -42,7 +42,7 @@ public:
    {
       ConnectSignals();
    }
-   ~Impl() = default;
+   ~Impl() { threadPool_.join(); }
 
    void ConnectSignals();