diff --git a/src/lib/Makefile b/src/lib/Makefile
index 82be85d4..1687e6a8 100644
--- a/src/lib/Makefile
+++ b/src/lib/Makefile
@@ -1,7 +1,12 @@
+obj := library.o main.o
+
 all: xlib
 
+clean:
+	rm -rf xlib $(obj)
+
+xlib: $(obj)
+	gcc -Wall -o $@ $^
+
 .c.o:
 	gcc -Wall -I. -I.. -Iinclude -g -c -o $@ $<
-
-xlib: $(patsubst %.c,%.o,$(wildcard *.c))
-	gcc -Wall -o $@ $^