diff --git a/wmlib/Makefile.am b/wmlib/Makefile.am
index 3a5ff272..c6432b61 100644
--- a/wmlib/Makefile.am
+++ b/wmlib/Makefile.am
@@ -8,6 +8,8 @@ include_HEADERS = WMaker.h
 
 AM_CPPFLAGS = $(DFLAGS) @XCFLAGS@
 
+libWMaker_la_LIBADD = -lX11
+
 libWMaker_la_SOURCES = 	\
 	menu.c 		\
 	app.c 		\