diff --git a/Makefile b/Makefile
index 62d3dd1d2..baf8431f6 100644
--- a/Makefile
+++ b/Makefile
@@ -1562,7 +1562,7 @@ endif #(NEED_FDT)
 
 # Add Secure Partition packages
 ifeq (${NEED_SP_PKG},yes)
-$(BUILD_PLAT)/sp_gen.mk: ${SP_MK_GEN} ${SP_LAYOUT_FILE} | ${BUILD_PLAT}
+$(BUILD_PLAT)/sp_gen.mk: ${SP_MK_GEN} ${SP_LAYOUT_FILE} | $$(@D)/
 	$(q)${PYTHON} "$<" "$@" $(filter-out $<,$^) $(BUILD_PLAT) ${COT} ${SP_DTS_LIST_FRAGMENT}
 sp: $(DTBS) $(BUILD_PLAT)/sp_gen.mk $(SP_PKGS)
 	$(s)echo