diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 156a003642..4409ea1ccc 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -56,7 +56,11 @@
 
 #include <libfdt.h>
 
-#define BIOS_FILENAME "opensbi-riscv64-sifive_u-fw_jump.bin"
+#if defined(TARGET_RISCV32)
+# define BIOS_FILENAME "opensbi-riscv32-sifive_u-fw_jump.bin"
+#else
+# define BIOS_FILENAME "opensbi-riscv64-sifive_u-fw_jump.bin"
+#endif
 
 static const struct MemmapEntry {
     hwaddr base;