diff --git a/npa/src/Makefile.am b/npa/src/Makefile.am
index 044280c..2acd811 100644
--- a/npa/src/Makefile.am
+++ b/npa/src/Makefile.am
@@ -65,6 +65,7 @@ lib_LTLIBRARIES = libnpa.la libcardnpa.la libpkcs15npa.la
 
 noinst_HEADERS = \
 		 sslutil.h \
+		 card-npa.h \
 		 iso-sm-internal.h \
 		 ccid-types.h