diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 3f632a1..c186f01 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -12,6 +12,7 @@
 	select INTEL_EDID
 	select INTEL_GMA_ACPI
 	select INTEL_GMA_SSC_ALTERNATE_REF
+	select HAVE_EXP_X86_64_SUPPORT
 
 config VBOOT
 	select VBOOT_STARTS_IN_BOOTBLOCK