diff --git a/inc/hf/api.h b/inc/hf/api.h
index 974ebdf..df3dff0 100644
--- a/inc/hf/api.h
+++ b/inc/hf/api.h
@@ -51,7 +51,7 @@
 struct ffa_value api_ffa_msg_recv(bool block, struct vcpu *current,
 				  struct vcpu **next);
 struct ffa_value api_ffa_rx_release(ffa_vm_id_t receiver_id,
-				    struct vcpu *current, struct vcpu **next);
+				    struct vcpu *current);
 struct ffa_value api_ffa_rx_acquire(ffa_vm_id_t receiver_id,
 				    struct vcpu *current);
 struct ffa_value api_vm_configure_pages(