diff --git a/hw/riscv/opentitan.c b/hw/riscv/opentitan.c
index 6a2fcc4ade..436503f1ba 100644
--- a/hw/riscv/opentitan.c
+++ b/hw/riscv/opentitan.c
@@ -227,7 +227,7 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
                                            IRQ_M_TIMER));
 
     /* SPI-Hosts */
-    for (int i = 0; i < OPENTITAN_NUM_SPI_HOSTS; ++i) {
+    for (i = 0; i < OPENTITAN_NUM_SPI_HOSTS; ++i) {
         dev = DEVICE(&(s->spi_host[i]));
         if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi_host[i]), errp)) {
             return;