diff --git a/plat/arm/css/common/css_common.mk b/plat/arm/css/common/css_common.mk
index 8fcfbe5..aabcb46 100644
--- a/plat/arm/css/common/css_common.mk
+++ b/plat/arm/css/common/css_common.mk
@@ -56,7 +56,7 @@
 endif
 
 ifneq (${RESET_TO_BL31},0)
-  $(error "Using BL3-1 as the reset vector is not supported on CSS platforms. \
+  $(error "Using BL31 as the reset vector is not supported on CSS platforms. \
   Please set RESET_TO_BL31 to 0.")
 endif