diff --git a/lib/asn1/libasn1.h b/lib/asn1/libasn1.h
index 16dc34ff1..9a58765f7 100644
--- a/lib/asn1/libasn1.h
+++ b/lib/asn1/libasn1.h
@@ -50,5 +50,6 @@
 #include "asn1.h"
 #include "der.h"
 #include "asn1_err.h"
+#include <parse_units.h>
 
 #endif /* __LIBASN1_H__ */
diff --git a/lib/hdb/libasn1.h b/lib/hdb/libasn1.h
index c588ce6ed..6d306a674 100644
--- a/lib/hdb/libasn1.h
+++ b/lib/hdb/libasn1.h
@@ -48,8 +48,9 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <asn1.h>
-#include "hdb_asn1.h"
 #include <der.h>
+#include "hdb_asn1.h"
 #include <asn1_err.h>
+#include <parse_units.h>
 
 #endif /* __LIBASN1_H__ */