diff --git a/core/arch/arm/include/sm/optee_smc.h b/core/arch/arm/include/sm/optee_smc.h
index 58b2e545ea8..51c46e34981 100644
--- a/core/arch/arm/include/sm/optee_smc.h
+++ b/core/arch/arm/include/sm/optee_smc.h
@@ -276,7 +276,8 @@
 #define OPTEE_SMC_SEC_CAP_DYNAMIC_SHM		(1 << 2)
 /* Secure world is built with virtualization support */
 #define OPTEE_SMC_SEC_CAP_VIRTUALIZATION	(1 << 3)
-
+/* Secure world is built with OCALL support */
+#define OPTEE_SMC_SEC_CAP_OCALL			(1 << 4)
 
 #define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES	9
 #define OPTEE_SMC_EXCHANGE_CAPABILITIES \
diff --git a/core/arch/arm/tee/entry_fast.c b/core/arch/arm/tee/entry_fast.c
index 0bee06bbd5d..1af0485b19d 100644
--- a/core/arch/arm/tee/entry_fast.c
+++ b/core/arch/arm/tee/entry_fast.c
@@ -91,6 +91,9 @@ static void tee_entry_exchange_capabilities(struct thread_smc_args *args)
 #ifdef CFG_VIRTUALIZATION
 	args->a1 |= OPTEE_SMC_SEC_CAP_VIRTUALIZATION;
 #endif
+#if defined(CFG_OCALL)
+	args->a1 |= OPTEE_SMC_SEC_CAP_OCALL;
+#endif
 
 #if defined(CFG_CORE_DYN_SHM)
 	dyn_shm_en = core_mmu_nsec_ddr_is_defined();