Index: kernel/arch/riscv64/src/riscv64.c
===================================================================
--- kernel/arch/riscv64/src/riscv64.c	(revision 11b285d87da6e1d6a1d65134694b4f971f3cdebc)
+++ kernel/arch/riscv64/src/riscv64.c	(revision a4eb3ba2b6a831a2a639dfe74c4deb2ca435b91c)
@@ -143,12 +143,12 @@
 }
 
-errno_t memcpy_from_uspace(void *dst, const void *uspace_src, size_t size)
+uintptr_t memcpy_from_uspace(void *dst, const void *uspace_src, size_t size)
 {
-	return EOK;
+	return 0;
 }
 
-errno_t memcpy_to_uspace(void *uspace_dst, const void *src, size_t size)
+uintptr_t memcpy_to_uspace(void *uspace_dst, const void *src, size_t size)
 {
-	return EOK;
+	return 0;
 }