diff --git a/src/Makefile.am b/src/Makefile.am
index 525904f9a..6df4a180d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -25,6 +25,7 @@ libmapnik_la_SOURCES = \
 	agg_renderer.cpp \
 	arrow.cpp \
 	${cairo_src} \
+	color.cpp \
 	datasource_cache.cpp \
 	distance.cpp \
 	envelope.cpp \