diff --git a/Makefile b/Makefile
index ea3f868..f1ce3c3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 CFLAGS+=-g -O2 -Wall -Wno-switch -Wextra -fstack-protector-strong -D_FORTIFY_SOURCE=2
+LDLIBS=-lrt
 
 DESTDIR=
 PREFIX=/usr/local