diff --git a/backends/platform/sdl/ps3/ps3.cpp b/backends/platform/sdl/ps3/ps3.cpp
index 94b816e47ee..ec4541b7031 100644
--- a/backends/platform/sdl/ps3/ps3.cpp
+++ b/backends/platform/sdl/ps3/ps3.cpp
@@ -88,6 +88,10 @@ void OSystem_PS3::initBackend() {
 	ConfMan.registerDefault("fullscreen", true);
 	ConfMan.registerDefault("aspect_ratio", true);
 
+	ConfMan.setBool("fullscreen", true);
+	if (!ConfMan.hasKey("aspect_ratio"))
+		ConfMan.setBool("aspect_ratio", true);
+
 	// Create the savefile manager
 	if (_savefileManager == 0)
 		_savefileManager = new DefaultSaveFileManager(PREFIX "/saves");