diff --git a/backends/graphics/graphics.h b/backends/graphics/graphics.h
index 3b50f72b60a..91d74d4b4cc 100644
--- a/backends/graphics/graphics.h
+++ b/backends/graphics/graphics.h
@@ -59,7 +59,7 @@ public:
 	// ResidualVM specific method
 	virtual void launcherInitSize(uint w, uint h) = 0;
 	// ResidualVM specific method
-	virtual Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d) = 0;
+	virtual Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d) = 0;
 
 	virtual int16 getHeight() = 0;
 	virtual int16 getWidth() = 0;
diff --git a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
index 1869c2173c8..eff4f8fdb5d 100644
--- a/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
+++ b/backends/graphics/surfacesdl/surfacesdl-graphics.cpp
@@ -160,7 +160,7 @@ void SurfaceSdlGraphicsManager::launcherInitSize(uint w, uint h) {
 	setupScreen(w, h, false, false);
 }
 
-Graphics::PixelBuffer SurfaceSdlGraphicsManager::setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d) {
+Graphics::PixelBuffer SurfaceSdlGraphicsManager::setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d) {
 	uint32 sdlflags;
 	int bpp;
 
diff --git a/backends/graphics/surfacesdl/surfacesdl-graphics.h b/backends/graphics/surfacesdl/surfacesdl-graphics.h
index 837831b028b..f8b37219d78 100644
--- a/backends/graphics/surfacesdl/surfacesdl-graphics.h
+++ b/backends/graphics/surfacesdl/surfacesdl-graphics.h
@@ -74,7 +74,7 @@ public:
 #endif
 	virtual void initSize(uint w, uint h, const Graphics::PixelFormat *format = NULL);
 	virtual void launcherInitSize(uint w, uint h); // ResidualVM specific method
-	Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d); // ResidualVM specific method
+	Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d); // ResidualVM specific method
 	virtual int getScreenChangeID() const { return _screenChangeCount; }
 
 	virtual void beginGFXTransaction();
diff --git a/backends/modular-backend.cpp b/backends/modular-backend.cpp
index 26c980f350d..eab6929d254 100644
--- a/backends/modular-backend.cpp
+++ b/backends/modular-backend.cpp
@@ -104,7 +104,7 @@ void ModularBackend::launcherInitSize(uint w, uint h) {
 }
 
 // ResidualVM specific method
-Graphics::PixelBuffer ModularBackend::setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d) {
+Graphics::PixelBuffer ModularBackend::setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d) {
 	return _graphicsManager->setupScreen(screenW, screenH, fullscreen, accel3d);
 }
 
diff --git a/backends/modular-backend.h b/backends/modular-backend.h
index 9d0266459bc..cd6b211678f 100644
--- a/backends/modular-backend.h
+++ b/backends/modular-backend.h
@@ -73,7 +73,7 @@ public:
 #endif
 	virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format = NULL);
 	virtual void launcherInitSize(uint w, uint h); // ResidualVM specific method
-	virtual Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d); // ResidualVM specific method
+	virtual Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d); // ResidualVM specific method
 	virtual int getScreenChangeID() const;
 
 	virtual void beginGFXTransaction();
diff --git a/backends/platform/android/android.h b/backends/platform/android/android.h
index c889b7abb06..cbe5a69e232 100644
--- a/backends/platform/android/android.h
+++ b/backends/platform/android/android.h
@@ -303,10 +303,10 @@ public:
 	// ResidualVM specific method
 	virtual void launcherInitSize(uint w, uint h);
 	bool lockMouse(bool lock);
-	Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d) {
+	Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d) {
 		return setupScreen(screenW, screenH, fullscreen, accel3d, true);
 	}
-	Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d, bool isGame);
+	Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d, bool isGame);
 };
 
 #endif
diff --git a/backends/platform/android/gfx.cpp b/backends/platform/android/gfx.cpp
index 45b148a8ac7..89e014d5c52 100644
--- a/backends/platform/android/gfx.cpp
+++ b/backends/platform/android/gfx.cpp
@@ -457,7 +457,7 @@ void OSystem_Android::copyRectToScreen(const void *buf, int pitch,
 
 
 // ResidualVM specific method
-Graphics::PixelBuffer OSystem_Android::setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d, bool isGame) {
+Graphics::PixelBuffer OSystem_Android::setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d, bool isGame) {
 	_opengl = accel3d;
 	initViewport();
 
diff --git a/common/system.h b/common/system.h
index 874a1fdbed6..c3d4f1165d2 100644
--- a/common/system.h
+++ b/common/system.h
@@ -664,7 +664,7 @@ public:
 	 * @param fullscreen	the new screen will be displayed in fullscreeen mode
 	 */
 
-	virtual Graphics::PixelBuffer setupScreen(int screenW, int screenH, bool fullscreen, bool accel3d) = 0;
+	virtual Graphics::PixelBuffer setupScreen(uint screenW, uint screenH, bool fullscreen, bool accel3d) = 0;
 
 	/**
 	 * Returns the currently set virtual screen height.