--- a/Makefile	Tue Dec 29 15:38:31 2009 +0200
+++ b/Makefile	Tue Dec 29 16:44:48 2009 +0200
@@ -16,7 +16,7 @@
 all: depend lib/libpngtile.so bin/util
 
 lib/libpngtile.so : \
-	build/obj/lib/image.o build/obj/lib/cache.o \
+	build/obj/lib/image.o build/obj/lib/cache.o build/obj/lib/error.o \
 	build/obj/shared/util.o build/obj/shared/log.o
 
 lib/pypngtile.so : \