diff --git a/sys/amd64/include/md_var.h b/sys/amd64/include/md_var.h
index 7169474b31db..adef2a9c521d 100644
--- a/sys/amd64/include/md_var.h
+++ b/sys/amd64/include/md_var.h
@@ -36,6 +36,7 @@
 
 #include <x86/x86_var.h>
 
+extern char	ctx_switch_xsave[];
 extern int	hw_lower_amd64_sharedpage;
 extern int	hw_ibrs_disable;
 extern int	hw_ssb_disable;
diff --git a/sys/x86/include/x86_var.h b/sys/x86/include/x86_var.h
index a1ce8f9e3113..f64fd5539b91 100644
--- a/sys/x86/include/x86_var.h
+++ b/sys/x86/include/x86_var.h
@@ -71,7 +71,6 @@ extern	u_int	cpu_power_eax;
 extern	u_int	cpu_power_ebx;
 extern	u_int	cpu_power_ecx;
 extern	u_int	cpu_power_edx;
-extern	char	ctx_switch_xsave[];
 extern	u_int	hv_base;
 extern	u_int	hv_high;
 extern	char	hv_vendor[];