diff --git a/src/r_things.h b/src/r_things.h
index 69f0ec518..cd101f2ea 100644
--- a/src/r_things.h
+++ b/src/r_things.h
@@ -125,7 +125,11 @@ void R_DrawMasked(maskcount_t* masks, INT32 nummasks);
 
 // number of sprite lumps for spritewidth,offset,topoffset lookup tables
 // Fab: this is a hack : should allocate the lookup tables per sprite
+#if __SIZEOF_POINTER__ < 8
 #define MAXVISSPRITES 2048 // added 2-2-98 was 128
+#else
+#define MAXVISSPRITES 4096 // only for 64bit
+#endif
 
 #define VISSPRITECHUNKBITS 6	// 2^6 = 64 sprites per chunk
 #define VISSPRITESPERCHUNK (1 << VISSPRITECHUNKBITS)