diff --git a/src/xcms/Makefile.am b/src/xcms/Makefile.am
index d0af8fa0..4b534e48 100644
--- a/src/xcms/Makefile.am
+++ b/src/xcms/Makefile.am
@@ -81,3 +81,6 @@ libxcms_la_SOURCES = \
                   uvY.c \
                   xyY.c \
                   Xcmsint.h
+
+X11dir = $(libdir)/X11
+dist_X11_DATA = Xcms.txt