diff --git a/env/start.S b/env/start.S
index e6849ca..016b218 100644
--- a/env/start.S
+++ b/env/start.S
@@ -30,7 +30,7 @@ _start:
 2:
     la t0, trap_entry
     csrw mtvec, t0
-#if defined(NUM_HARTS) && NUM_HARTS>1
+#if defined(NUM_HARTS)
 	/* block other cores until hart 0 has finished initialization */
 	csrr  t0, mhartid 
 	beqz t0, hart0_init