diff --git a/plat/arm/css/sgi/sgi-common.mk b/plat/arm/css/sgi/sgi-common.mk
index 9c398b7..659351a 100644
--- a/plat/arm/css/sgi/sgi-common.mk
+++ b/plat/arm/css/sgi/sgi-common.mk
@@ -45,6 +45,7 @@
 override CSS_LOAD_SCP_IMAGES	:=	0
 override NEED_BL2U		:=	no
 override ARM_BL31_IN_DRAM	:=	1
+override ARM_PLAT_MT		:=	1
 
 # System coherency is managed in hardware
 HW_ASSISTED_COHERENCY	:=	1