diff --git a/lab5/Makefile b/lab5/Makefile
index 0f75946..53c187c 100644
--- a/lab5/Makefile
+++ b/lab5/Makefile
@@ -1,4 +1,4 @@
-fpu: fpu.c arctg.s
+fpu: fpu.c arctg.s arctgc.c
 	gcc -g fpu.c arctg.s -o fpu -no-pie -lm