diff --git a/Makefile b/Makefile
index 65c64ede0..4d4450e1a 100644
--- a/Makefile
+++ b/Makefile
@@ -2,9 +2,9 @@ PYTHON := python
 MD5 := md5sum -c --quiet
 
 .SUFFIXES:
-.SUFFIXES: .2bpp
 .PHONY: all clean crystal crystal11
 .SECONDEXPANSION:
+.PRECIOUS: %.2bpp
 
 poketools := extras/pokemontools
 gfx       := $(PYTHON) gfx.py