diff --git a/modules/juce_gui_basics/juce_gui_basics.h b/modules/juce_gui_basics/juce_gui_basics.h
index fd3d38d3a1..9c2947267e 100644
--- a/modules/juce_gui_basics/juce_gui_basics.h
+++ b/modules/juce_gui_basics/juce_gui_basics.h
@@ -161,6 +161,10 @@ namespace juce
 
     class FlexBox;
     class Grid;
+
+   #if JUCE_MAC || JUCE_WINDOWS
+    Image createSnapshotOfNativeWindow (void* nativeWindowHandle);
+   #endif
 }
 
 #include "mouse/juce_MouseCursor.h"
diff --git a/modules/juce_gui_basics/native/juce_mac_Windowing.mm b/modules/juce_gui_basics/native/juce_mac_Windowing.mm
index 2d16fb8107..3ef0d85c44 100644
--- a/modules/juce_gui_basics/native/juce_mac_Windowing.mm
+++ b/modules/juce_gui_basics/native/juce_mac_Windowing.mm
@@ -634,7 +634,6 @@ static Image createNSWindowSnapshot (NSWindow* nsWindow)
     }
 }
 
-Image createSnapshotOfNativeWindow (void*);
 Image createSnapshotOfNativeWindow (void* nativeWindowHandle)
 {
     if (id windowOrView = (id) nativeWindowHandle)
diff --git a/modules/juce_gui_basics/native/juce_win32_Windowing.cpp b/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
index d361b848a1..8be4b61818 100644
--- a/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
+++ b/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
@@ -969,7 +969,6 @@ private:
 };
 
 //==============================================================================
-Image createSnapshotOfNativeWindow (void*);
 Image createSnapshotOfNativeWindow (void* nativeWindowHandle)
 {
     auto hwnd = (HWND) nativeWindowHandle;