diff --git a/include/tee/optee.h b/include/tee/optee.h
index affa937..ebdfe5e 100644
--- a/include/tee/optee.h
+++ b/include/tee/optee.h
@@ -71,9 +71,9 @@
 #endif
 
 #if defined(CONFIG_OPTEE) && defined(CONFIG_OF_LIBFDT)
-int optee_copy_fdt_nodes(const void *old_blob, void *new_blob);
+int optee_copy_fdt_nodes(void *new_blob);
 #else
-static inline int optee_copy_fdt_nodes(const void *old_blob, void *new_blob)
+static inline int optee_copy_fdt_nodes(void *new_blob)
 {
 	return 0;
 }