diff --git a/plat/arm/board/common/board_common.mk b/plat/arm/board/common/board_common.mk
index 6db0c00..5cdf1bf 100644
--- a/plat/arm/board/common/board_common.mk
+++ b/plat/arm/board/common/board_common.mk
@@ -33,7 +33,7 @@
 $(warning Development keys support for FVP is deprecated. Use `regs` \
 option instead)
 else
-	$(error "Unsupported ARM_ROTPK_LOCATION value")
+$(error "Unsupported ARM_ROTPK_LOCATION value")
 endif
 
 $(eval $(call add_define,ARM_ROTPK_LOCATION_ID))