diff --git a/Makefile b/Makefile
index 84fb11a..55bcb7f 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,8 @@ EXT=.c
 FLAGS=-O0 -g
 DEBUG_FLAGS=-DDEBUG -fsanitize=undefined -fsanitize=address
 DEPFLAGS=-MD -MP
-LIBS=$(shell pkg-config --libs xcb x11 xinerama json-c)
+LIBS=$(shell pkg-config --libs xcb x11 xinerama xft json-c cmocka)
+FLAGS+=$(shell pkg-config --cflags xcb x11 xinerama xft json-c cmocka)
 EXEC_NAME=wm
 
 OBJDIR=obj