diff --git a/tpws/Makefile b/tpws/Makefile
index d48ed0bc..1c865790 100644
--- a/tpws/Makefile
+++ b/tpws/Makefile
@@ -1,6 +1,6 @@
 CC ?= gcc
 CFLAGS += -s -O3
-LIBS = -lz
+LIBS = -lz -lcap
 SRC_FILES = *.c
 
 all: tpws