diff --git a/library/Makefile b/library/Makefile
index ed5e1e1..ceb9c0d 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -142,6 +142,7 @@
 	     psa_crypto_slot_management.o \
 	     psa_crypto_storage.o \
 	     psa_its_file.o \
+	     psa_util.o \
 	     ripemd160.o \
 	     rsa.o \
 	     rsa_alt_helpers.o \