diff --git a/alpha-dis.c b/alpha-dis.c
index 8a2411e4d5..ae331b35b8 100644
--- a/alpha-dis.c
+++ b/alpha-dis.c
@@ -238,10 +238,6 @@ extern const unsigned alpha_num_operands;
 #define AXP_REG_SP	30
 #define AXP_REG_ZERO	31
 
-#define bfd_mach_alpha_ev4  0x10
-#define bfd_mach_alpha_ev5  0x20
-#define bfd_mach_alpha_ev6  0x30
-
 enum bfd_reloc_code_real {
     BFD_RELOC_23_PCREL_S2,
     BFD_RELOC_ALPHA_HINT
diff --git a/dis-asm.h b/dis-asm.h
index 296537ad3a..5b07d7f3a0 100644
--- a/dis-asm.h
+++ b/dis-asm.h
@@ -184,6 +184,9 @@ enum bfd_architecture
 #define bfd_mach_sh5        0x50
   bfd_arch_alpha,      /* Dec Alpha */
 #define bfd_mach_alpha 1
+#define bfd_mach_alpha_ev4  0x10
+#define bfd_mach_alpha_ev5  0x20
+#define bfd_mach_alpha_ev6  0x30
   bfd_arch_arm,        /* Advanced Risc Machines ARM */
 #define bfd_mach_arm_unknown	0
 #define bfd_mach_arm_2		1
diff --git a/disas.c b/disas.c
index 223606cc50..d208c52402 100644
--- a/disas.c
+++ b/disas.c
@@ -205,7 +205,7 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
     disasm_info.mach = bfd_mach_sh4;
     print_insn = print_insn_sh;
 #elif defined(TARGET_ALPHA)
-    disasm_info.mach = bfd_mach_alpha;
+    disasm_info.mach = bfd_mach_alpha_ev6;
     print_insn = print_insn_alpha;
 #elif defined(TARGET_CRIS)
     if (flags != 32) {