diff --git a/plat/arm/soc/common/soc_css.mk b/plat/arm/soc/common/soc_css.mk
index f80cbce..7ae8fdb 100644
--- a/plat/arm/soc/common/soc_css.mk
+++ b/plat/arm/soc/common/soc_css.mk
@@ -36,4 +36,6 @@
 
 BL2_SOURCES		+=	plat/arm/soc/common/soc_css_security.c
 
+BL2U_SOURCES		+=	plat/arm/soc/common/soc_css_security.c
+
 BL31_SOURCES		+=	plat/arm/soc/common/soc_css_security.c