diff --git a/examples/sample.source.TAP3/Makefile b/examples/sample.source.TAP3/Makefile
index 6a44b5b474c2f01a4d4f912336cae0ce97ee93a9..44240f6dac52a02e719887b9789763487be02ab0 100644
--- a/examples/sample.source.TAP3/Makefile
+++ b/examples/sample.source.TAP3/Makefile
@@ -618,6 +618,8 @@ ASN_MODULE_HEADERS=	\
 
 ASN_MODULE_HEADERS+=INTEGER.h
 ASN_MODULE_HEADERS+=NativeEnumerated.h
+ASN_MODULE_HEADERS+=IA5String.h
+ASN_MODULE_SOURCES+=IA5String.c
 ASN_MODULE_SOURCES+=INTEGER.c
 ASN_MODULE_SOURCES+=NativeEnumerated.c
 ASN_MODULE_HEADERS+=NativeInteger.h