diff --git a/common/d_iface.h b/common/d_iface.h
index 307cb72..db74ad2 100644
--- a/common/d_iface.h
+++ b/common/d_iface.h
@@ -211,8 +211,6 @@ typedef struct
 extern drawsurf_t	r_drawsurf;
 
 void R_DrawSurface (void);
-void R_GenTile (msurface_t *psurf, void *pdest);
-
 
 // !!! if this is changed, it must be changed in d_ifacea.h too !!!
 #define TURB_TEX_SIZE	64		// base turbulent texture size
@@ -220,7 +218,6 @@ void R_GenTile (msurface_t *psurf, void *pdest);
 // !!! if this is changed, it must be changed in d_ifacea.h too !!!
 #define	CYCLE			128		// turbulent cycle size
 
-#define TILE_SIZE		128		// size of textures generated by R_GenTiledSurf
 
 #define SKYSHIFT		7
 #define	SKYSIZE			(1 << SKYSHIFT)
diff --git a/common/glquake.h b/common/glquake.h
index cf9de10..a72d4a7 100644
--- a/common/glquake.h
+++ b/common/glquake.h
@@ -103,7 +103,6 @@ extern	PROC glVertexPointerEXT;
 					//  1 pixel per triangle
 //#define	MAX_LBM_HEIGHT		480
 
-#define TILE_SIZE		128		// size of textures generated by R_GenTiledSurf
 
 #define SKYSHIFT		7
 #define	SKYSIZE			(1 << SKYSHIFT)