diff --git a/sys/arm/sa11x0/uart_bus_sa1110.c b/sys/arm/sa11x0/uart_bus_sa1110.c
index 6ff3addff190..fd4b164b6de9 100644
--- a/sys/arm/sa11x0/uart_bus_sa1110.c
+++ b/sys/arm/sa11x0/uart_bus_sa1110.c
@@ -46,6 +46,8 @@ __FBSDID("$FreeBSD$");
 
 static int uart_sa1110_probe(device_t dev);
 
+extern struct uart_class uart_sa1110_class;
+
 static device_method_t uart_sa1110_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,		uart_sa1110_probe),
diff --git a/sys/arm/sa11x0/uart_cpu_sa1110.c b/sys/arm/sa11x0/uart_cpu_sa1110.c
index a8967cd5f38b..82054cda03a3 100644
--- a/sys/arm/sa11x0/uart_cpu_sa1110.c
+++ b/sys/arm/sa11x0/uart_cpu_sa1110.c
@@ -40,6 +40,9 @@ __FBSDID("$FreeBSD$");
 
 bus_space_tag_t uart_bus_space_io;
 bus_space_tag_t uart_bus_space_mem;
+
+extern struct uart_ops uart_sa1110_ops;
+
 int
 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
 {