diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 02758ae0eb..419a21478c 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -487,7 +487,7 @@ enum {
 };
 
 /* CSR function table */
-extern riscv_csr_operations csr_ops[];
+extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE];
 
 void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops);
 void riscv_set_csr_ops(int csrno, riscv_csr_operations *ops);