src/Makefile.am | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Makefile.am b/src/Makefile.am
index 01e3e48..894a547 100755
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -84,6 +84,8 @@ ElmerFront_SOURCES =  $(COMMON_SRCS)
 
 endif
 
+ElmerFront_LDADD = -lX11
+
 install-data-local:
 	@echo "Installing tcl scripts to ${prefix}/share/elmerfront/tcl"