diff --git a/lucidlife/src/Makefile.in b/lucidlife/src/Makefile.in
index 6988bb4..a22703b 100644
--- a/lucidlife/src/Makefile.in
+++ b/lucidlife/src/Makefile.in
@@ -54,7 +54,7 @@ am_lucidlife_OBJECTS = ewmh.$(OBJEXT) lucidlife.$(OBJEXT) \
 	lr_lookup.$(OBJEXT) ul_lookup.$(OBJEXT) ur_lookup.$(OBJEXT) \
 	util.$(OBJEXT)
 lucidlife_OBJECTS = $(am_lucidlife_OBJECTS)
-lucidlife_LDADD = $(LDADD)
+lucidlife_LDADD = $(LDADD) -lX11
 DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles