diff --git a/mach/i386/as/mach0.c b/mach/i386/as/mach0.c
index 0f1b621ed..459c07967 100644
--- a/mach/i386/as/mach0.c
+++ b/mach/i386/as/mach0.c
@@ -15,3 +15,8 @@
 #define valu_t long
 #undef ADDR_T
 #define ADDR_T long
+
+#undef ALIGNWORD
+#define ALIGNWORD	4
+#undef ALIGNSECT
+#define ALIGNSECT	4
diff --git a/mach/i86/as/mach0.c b/mach/i86/as/mach0.c
index 59d58cf65..66db519bd 100644
--- a/mach/i86/as/mach0.c
+++ b/mach/i86/as/mach0.c
@@ -14,3 +14,8 @@
 
 #undef valu_t
 #define valu_t long
+
+#undef ALIGNWORD
+#define ALIGNWORD 2
+#undef ALIGNSECT
+#define ALIGNSECT 2