diff --git a/source/src/main.cpp b/source/src/main.cpp
index ec293068..ea86b923 100644
--- a/source/src/main.cpp
+++ b/source/src/main.cpp
@@ -123,7 +123,7 @@ void setfullscreen(bool enable)
     }
 }
 
-void screenres(int w, int h, int bpp = 0)
+void screenres(int w, int h)
 {
 #if !defined(WIN32) && !defined(__APPLE__)
     if(initing)
@@ -131,18 +131,16 @@ void screenres(int w, int h, int bpp = 0)
 #endif
         scr_w = w;
         scr_h = h;
-        if(bpp) colorbits = bpp;
 #if defined(WIN32) || defined(__APPLE__)
         initwarning();
 #else
         return;
     }
-    SDL_Surface *surf = SDL_SetVideoMode(w, h, bpp, SDL_OPENGL|SDL_RESIZABLE|(screen->flags&SDL_FULLSCREEN));
+    SDL_Surface *surf = SDL_SetVideoMode(w, h, 0, SDL_OPENGL|SDL_RESIZABLE|(screen->flags&SDL_FULLSCREEN));
     if(!surf) return;
     screen = surf;
     scr_w = screen->w;
     scr_h = screen->h;
-    if(bpp) colorbits = bpp;
     glViewport(0, 0, scr_w, scr_h);
     VIRTW = scr_w*VIRTH/scr_h;
 #endif
@@ -157,7 +155,7 @@ void setresdata(char *s, enet_uint32 c)
 
 VARF(fullscreen, 0, 0, 1, setfullscreen(fullscreen!=0));
 
-COMMAND(screenres, ARG_3INT);
+COMMAND(screenres, ARG_2INT);
 
 VARFP(gamma, 30, 100, 300,
 {