diff --git a/sys/x86/x86/cpu_machdep.c b/sys/x86/x86/cpu_machdep.c
index b20cbe6a29fd..ed4471038a34 100644
--- a/sys/x86/x86/cpu_machdep.c
+++ b/sys/x86/x86/cpu_machdep.c
@@ -451,9 +451,7 @@ struct {
 	{ cpu_idle_spin, "spin" },
 	{ cpu_idle_mwait, "mwait" },
 	{ cpu_idle_hlt, "hlt" },
-#if !defined(__i386__)
 	{ cpu_idle_acpi, "acpi" },
-#endif
 	{ NULL, NULL }
 };
 
@@ -470,11 +468,9 @@ idle_sysctl_available(SYSCTL_HANDLER_ARGS)
 		if (strstr(idle_tbl[i].id_name, "mwait") &&
 		    (cpu_feature2 & CPUID2_MON) == 0)
 			continue;
-#if !defined(__i386__)
 		if (strcmp(idle_tbl[i].id_name, "acpi") == 0 &&
 		    cpu_idle_hook == NULL)
 			continue;
-#endif
 		p += sprintf(p, "%s%s", p != avail ? ", " : "",
 		    idle_tbl[i].id_name);
 	}
@@ -509,11 +505,9 @@ idle_sysctl(SYSCTL_HANDLER_ARGS)
 		if (strstr(idle_tbl[i].id_name, "mwait") &&
 		    (cpu_feature2 & CPUID2_MON) == 0)
 			continue;
-#if !defined(__i386__)
 		if (strcmp(idle_tbl[i].id_name, "acpi") == 0 &&
 		    cpu_idle_hook == NULL)
 			continue;
-#endif
 		if (strcmp(idle_tbl[i].id_name, buf))
 			continue;
 		cpu_idle_fn = idle_tbl[i].id_fn;