diff --git a/sys/mips/include/_bus.h b/sys/mips/include/_bus.h
index 3ba6e2cc1ee2..54b0cbb65636 100644
--- a/sys/mips/include/_bus.h
+++ b/sys/mips/include/_bus.h
@@ -35,7 +35,7 @@
  * Bus address and size types
  */
 #include "opt_cputype.h" 
-#if !(defined(TARGET_OCTEON) || defined(ISA_MIPS32))
+#if !(defined(TARGET_OCTEON) && defined(ISA_MIPS32))
 typedef uintptr_t bus_addr_t;
 #else
 typedef uint64_t bus_addr_t;