diff --git a/src/arch/riscv/sbi.c b/src/arch/riscv/sbi.c
index a6699a2c..103a07fc 100644
--- a/src/arch/riscv/sbi.c
+++ b/src/arch/riscv/sbi.c
@@ -436,7 +436,7 @@ size_t sbi_vs_handler()
             break;
         default:
             WARNING("guest issued unsupport sbi extension call (%d)", extid);
-            ret.value = SBI_ERR_NOT_SUPPORTED;
+            ret.error = SBI_ERR_NOT_SUPPORTED;
     }
 
     vcpu_writereg(cpu()->vcpu, REG_A0, (unsigned long)ret.error);