diff --git a/include/runtime_services/spm_common.h b/include/runtime_services/spm_common.h
index 398d01a..f187ed7 100644
--- a/include/runtime_services/spm_common.h
+++ b/include/runtime_services/spm_common.h
@@ -129,7 +129,7 @@
 bool memory_retrieve(struct mailbox_buffers *mb,
 		     struct ffa_memory_region **retrieved, uint64_t handle,
 		     ffa_id_t sender, ffa_id_t receiver,
-		     uint32_t mem_func, ffa_memory_region_flags_t flags);
+		     ffa_memory_region_flags_t flags);
 
 /**
  * Helper to conduct a memory relinquish. The caller is usually the receiver,