diff --git a/Makefile b/Makefile
index 4d848b2..232ec31 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CC=gcc
-CFLAGS=-Iinclude -static
+CFLAGS=-Iinclude -lm -static
 OBJ_DIR=build
 SRC_DIR=src