diff --git a/firmware/fw_base.S b/firmware/fw_base.S
index ae14cc7b..3c509cfb 100644
--- a/firmware/fw_base.S
+++ b/firmware/fw_base.S
@@ -187,7 +187,7 @@ _start_warm:
 
 	/* Initialize SBI runtime */
 	csrr	a0, CSR_MSCRATCH
-	Call	sbi_init
+	call	sbi_init
 
 	/* We don't expect to reach here hence just hang */
 	j	_start_hang