diff --git a/Quake/in_sdl.c b/Quake/in_sdl.c
index 2196a6643..79560540b 100644
--- a/Quake/in_sdl.c
+++ b/Quake/in_sdl.c
@@ -80,13 +80,13 @@ static SDL_GameController *joy_active_controller = NULL;
 
 static qboolean	no_mouse = false;
 
-static int buttonremap[] =
+static const int buttonremap[] =
 {
-	K_MOUSE1,
-	K_MOUSE3,	/* right button		*/
-	K_MOUSE2,	/* middle button	*/
-	K_MOUSE4,
-	K_MOUSE5
+	K_MOUSE1,	/* left button		*/
+	K_MOUSE3,	/* middle button	*/
+	K_MOUSE2,	/* right button		*/
+	K_MOUSE4,	/* back button		*/
+	K_MOUSE5	/* forward button	*/
 };
 
 /* total accumulated mouse movement since last frame */