diff --git a/sys/mips/include/bus.h b/sys/mips/include/bus.h
index 42ac1df0c2e4..92557d7cbd3c 100644
--- a/sys/mips/include/bus.h
+++ b/sys/mips/include/bus.h
@@ -101,8 +101,9 @@
  * Map a region of device bus space into CPU virtual address space.
  */
 
-__inline int	bus_space_map(bus_space_tag_t t, bus_addr_t addr,
-		    bus_size_t size, int flags, bus_space_handle_t *bshp);
+static __inline int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
+				  bus_size_t size, int flags,
+				  bus_space_handle_t *bshp);
 
 static __inline int
 bus_space_map(bus_space_tag_t t __unused, bus_addr_t addr,