diff --git a/arch/um/drivers/vector_user.c b/arch/um/drivers/vector_user.c
index e4ffeb9a1fa4..c650e428432b 100644
--- a/arch/um/drivers/vector_user.c
+++ b/arch/um/drivers/vector_user.c
@@ -771,7 +771,7 @@ int uml_vector_detach_bpf(int fd, void *bpf)
 		printk(KERN_ERR BPF_DETACH_FAIL, prog->len, prog->filter, fd, -errno);
 	return err;
 }
-void *uml_vector_default_bpf(void *mac)
+void *uml_vector_default_bpf(const void *mac)
 {
 	struct sock_filter *bpf;
 	uint32_t *mac1 = (uint32_t *)(mac + 2);
diff --git a/arch/um/drivers/vector_user.h b/arch/um/drivers/vector_user.h
index d29d5fdd98fa..3a73d17a0161 100644
--- a/arch/um/drivers/vector_user.h
+++ b/arch/um/drivers/vector_user.h
@@ -97,7 +97,7 @@ extern int uml_vector_recvmmsg(
 	unsigned int vlen,
 	unsigned int flags
 );
-extern void *uml_vector_default_bpf(void *mac);
+extern void *uml_vector_default_bpf(const void *mac);
 extern void *uml_vector_user_bpf(char *filename);
 extern int uml_vector_attach_bpf(int fd, void *bpf);
 extern int uml_vector_detach_bpf(int fd, void *bpf);