diff --git a/SpaceCadetPinball/imgui_impl_sdl.cpp b/SpaceCadetPinball/imgui_impl_sdl.cpp
index 87bbcdd..c773264 100644
--- a/SpaceCadetPinball/imgui_impl_sdl.cpp
+++ b/SpaceCadetPinball/imgui_impl_sdl.cpp
@@ -55,7 +55,9 @@
 
 // SDL
 #include <SDL.h>
+#ifdef _WIN32
 #include <SDL_syswm.h>
+#endif
 #if defined(__APPLE__)
 #include <TargetConditionals.h>
 #endif