diff --git a/arch/riscv/cpu/fu540/Makefile b/arch/riscv/cpu/fu540/Makefile
index 043fb96..088205e 100644
--- a/arch/riscv/cpu/fu540/Makefile
+++ b/arch/riscv/cpu/fu540/Makefile
@@ -8,4 +8,5 @@
 else
 obj-y += dram.o
 obj-y += cpu.o
+obj-y += cache.o
 endif