diff --git a/cogl/Makefile.am b/cogl/Makefile.am
index b1af4792f..69ce95104 100644
--- a/cogl/Makefile.am
+++ b/cogl/Makefile.am
@@ -106,6 +106,7 @@ libclutter_cogl_la_SOURCES = 				\
 	$(srcdir)/cogl-vertex-buffer-private.h 		\
 	$(srcdir)/cogl-vertex-buffer.c			\
 	$(srcdir)/cogl-matrix.c				\
+	$(srcdir)/cogl-matrix-private.h			\
 	$(srcdir)/cogl-matrix-stack.c			\
 	$(srcdir)/cogl-matrix-stack.h			\
 	$(srcdir)/cogl-material.c			\