diff --git a/environments/sp/sp_entry.c b/environments/sp/sp_entry.c
index 0a709c2..c9b2510 100644
--- a/environments/sp/sp_entry.c
+++ b/environments/sp/sp_entry.c
@@ -26,5 +26,5 @@
 
 	libc_init();
 
-	sp_main((struct ffa_init_info *)a0);
+	sp_main((union ffa_boot_info *)a0);
 }