diff --git a/src/Makefile.am b/src/Makefile.am
index 662c009..6bd4b20 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -14,3 +14,6 @@ INCLUDES = @GLIB_CFLAGS@
 LDADD = @GLIB_LIBS@
 CLEANFILES = *~
 
+# Include files to install
+libmodbusincludedir = $(includedir)/libmodbus
+libmodbusinclude_HEADERS = modbus.h