diff --git a/src/utils.c b/src/utils.c
index b884cca..5e92cbf 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -251,7 +251,7 @@
 	return true;
 }
 
-LIBPLDM_ABI_STABLE
+LIBPLDM_ABI_DEPRECATED
 bool is_transfer_flag_valid(uint8_t transfer_flag)
 {
 	switch (transfer_flag) {