diff --git a/practical_work/vec2/tests/Makefile b/practical_work/vec2/tests/Makefile
index 7966f6f8a76f80097d934809e74b7e8c1550448a..cbbc56a1cde0d19fde54571807bd7643749ed0b9 100644
--- a/practical_work/vec2/tests/Makefile
+++ b/practical_work/vec2/tests/Makefile
@@ -2,7 +2,7 @@ CC=gcc
 OPTS=-g -O3 -Wall -Wextra
 LINK=-lm
 
-vec2_tests: vec2_tests.o vec2.o
+vec2_tests: vec2_tests.o vec2.o util.o
 	$(CC) $(OPTS) -o $@ $^ $(LINK)
 
 test: vec2_tests
@@ -14,5 +14,8 @@ vec2_tests.o: vec2_tests.c
 vec2.o: ../vec2.c ../vec2.h
 	$(CC) $(OPTS) -c $^
 
+util.o: ../util.c ../util.h
+	$(CC) $(OPTS) -c $^
+
 clean:
 	rm -f *.o vec2_tests
\ No newline at end of file