diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile
index 7f7600424b1489388d4c56f773d805acdd85c219..5274e88cd29367dae4db8b3c8ec2f76174f01ed3 100644
--- a/tools/testing/radix-tree/Makefile
+++ b/tools/testing/radix-tree/Makefile
@@ -2,7 +2,7 @@
 CFLAGS += -I. -I../../include -g -O2 -Wall -D_LGPL_SOURCE
 LDFLAGS += -lpthread -lurcu
 TARGETS = main
-OFILES = main.o radix-tree.o linux.o test.o tag_check.o find_next_bit.o \
+OFILES = main.o radix-tree.o linux.o test.o tag_check.o find_bit.o \
 	 regression1.o regression2.o regression3.o multiorder.o \
 	 iteration_check.o benchmark.o
 
@@ -18,8 +18,7 @@ main:	$(OFILES)
 clean:
 	$(RM) -f $(TARGETS) *.o radix-tree.c
 
-find_next_bit.o: ../../lib/find_bit.c
-	$(CC) $(CFLAGS) -c -o $@ $<
+vpath %.c ../../lib
 
 $(OFILES): *.h */*.h \
 	../../include/linux/*.h \