diff --git a/Makefile b/Makefile
index 521072bdb..fd94513ec 100644
--- a/Makefile
+++ b/Makefile
@@ -17,8 +17,8 @@ else ifeq ($(ARCH),RV64)
 else
   $(error '$(ARCH)' is not a valid architecture, must be one of: RV32, RV64)
 endif
-SAIL_XLEN += riscv_xlen.sail
 
+SAIL_XLEN += riscv_xlen.sail
 SAIL_FLEN := riscv_flen_D.sail
 SAIL_VLEN := riscv_vlen.sail