diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index d72c06ec37f..7eb85d654a7 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -974,7 +974,8 @@ extern enum riscv_cc get_riscv_cc (const rtx use);
 #define TARGET_SFB_ALU \
  ((riscv_microarchitecture == sifive_7) \
   || (riscv_microarchitecture == sifive_p400) \
-  || (riscv_microarchitecture == sifive_p600))
+  || (riscv_microarchitecture == sifive_p600) \
+  || (riscv_microarchitecture == andes_45_series))
 
 /* True if the target supports misaligned vector loads and stores.  */
 #define TARGET_VECTOR_MISALIGN_SUPPORTED \