diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index 043425e5e3..8835dcf36f 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -26,7 +26,7 @@ endif
 ifeq ($(IS_32BIT),y)
 PLATFORM_CPPFLAGS += -march=i386 -m32
 else
-PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common
+PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common -m64
 endif
 
 PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden