diff --git a/sdl2-sys/src/render.rs b/sdl2-sys/src/render.rs
index 5f4ac279988..c3396250808 100644
--- a/sdl2-sys/src/render.rs
+++ b/sdl2-sys/src/render.rs
@@ -43,10 +43,10 @@ pub const SDL_FLIP_VERTICAL : SDL_RendererFlip = 0x00000002;
 
 #[allow(missing_copy_implementations)]
 #[repr(C)]
-pub struct SDL_Renderer;
+pub struct SDL_Renderer(c_void);
 #[allow(missing_copy_implementations)]
 #[repr(C)]
-pub struct SDL_Texture;
+pub struct SDL_Texture(c_void);
 
 //SDL_blendmode.h
 pub type SDL_BlendMode = c_int;
diff --git a/sdl2-sys/src/surface.rs b/sdl2-sys/src/surface.rs
index cde71ca4750..b3705800260 100644
--- a/sdl2-sys/src/surface.rs
+++ b/sdl2-sys/src/surface.rs
@@ -17,7 +17,7 @@ pub const SDL_DONTFREE: SDL_SurfaceFlag = 0x00000004;
 //SDL_surface.h
 #[allow(missing_copy_implementations)]
 #[repr(C)]
-pub struct SDL_BlitMap;
+pub struct SDL_BlitMap(c_void);
 
 #[allow(missing_copy_implementations)]
 #[repr(C)]
diff --git a/sdl2-sys/src/video.rs b/sdl2-sys/src/video.rs
index e2ccb2a420f..b89ec9e1f85 100644
--- a/sdl2-sys/src/video.rs
+++ b/sdl2-sys/src/video.rs
@@ -11,7 +11,7 @@ pub type SDL_bool = c_int;
 //SDL_video.h
 #[allow(missing_copy_implementations)]
 #[repr(C)]
-pub struct SDL_Window;
+pub struct SDL_Window(c_void);
 
 #[allow(missing_copy_implementations)]
 #[repr(C)]