--- src/Makefile.am.orig
+++ src/Makefile.am
@@ -1,7 +1,7 @@
 bin_PROGRAMS = hsetroot
 
 AM_CFLAGS = @CFLAGS@ @IMLIB2_CFLAGS@ -Wall
-LIBS = @IMLIB2_LIBS@
+LIBS = @IMLIB2_LIBS@ -lX11
 
 hsetroot_SOURCES = hsetroot.c