diff --git a/Makefile.am b/Makefile.am
index dd2937e9..7b8980fc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,6 +19,7 @@ facetopology.c					\
 facetopology.h					\
 geometry.c					\
 geometry.h					\
+grid.h						\
 preprocess.c					\
 readvector.cpp					\
 readvector.hpp					\