diff --git a/modules/juce_gui_basics/native/juce_Windowing_windows.cpp b/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
index 32d985bd0f..73f138173f 100644
--- a/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
+++ b/modules/juce_gui_basics/native/juce_Windowing_windows.cpp
@@ -1984,7 +1984,7 @@ public:
 
     //==============================================================================
     bool dontRepaint;
-    static ModifierKeys modifiersAtLastCallback;
+    static inline ModifierKeys modifiersAtLastCallback;
 
     //==============================================================================
     struct FileDropTarget final : public ComBaseClassHelper<IDropTarget>
@@ -2250,7 +2250,7 @@ private:
     bool isAccessibilityActive = false;
 
     //==============================================================================
-    static MultiTouchMapper<DWORD> currentTouches;
+    static inline MultiTouchMapper<DWORD> currentTouches;
 
     //==============================================================================
     class WindowClassHolder final : private DeletedAtShutdown
@@ -4738,9 +4738,6 @@ private:
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (HWNDComponentPeer)
 };
 
-MultiTouchMapper<DWORD> HWNDComponentPeer::currentTouches;
-ModifierKeys HWNDComponentPeer::modifiersAtLastCallback;
-
 ComponentPeer* Component::createNewPeer (int styleFlags, void* parentHWND)
 {
     return new HWNDComponentPeer { *this, styleFlags, (HWND) parentHWND, false, 1 };