diff --git a/src/sdl.c b/src/sdl.c
index 89c87ac..356add2 100644
--- a/src/sdl.c
+++ b/src/sdl.c
@@ -3,11 +3,15 @@
 #include "lispemul.h"
 #include "miscstat.h"
 #include "keyboard.h"
+
 static SDL_Window *sdl_window = NULL;
 static SDL_Renderer *sdl_renderer = NULL;
 static SDL_Texture *sdl_texture = NULL;
 static Uint32 *buffer = NULL;
 
+extern void kb_trans(u_short keycode, u_short upflg);
+extern int error(const char *s);
+
 extern int KBDEventFlg;
 int keymap[] = {
   0, SDLK_5,