diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index 47084bc..92b16fc 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -215,11 +215,13 @@
 DEFINE_SYSOP_TYPE_FUNC(dmb, ish)
 DEFINE_SYSOP_FUNC(isb)
 
+#if !ERROR_DEPRECATED
 uint32_t get_afflvl_shift(uint32_t);
 uint32_t mpidr_mask_lower_afflvls(uint64_t, uint32_t);
 
 void __dead2 eret(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
 		  uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);
+#endif
 void __dead2 smc(uint64_t x0, uint64_t x1, uint64_t x2, uint64_t x3,
 		 uint64_t x4, uint64_t x5, uint64_t x6, uint64_t x7);