diff --git a/firmware/fw_jump.S b/firmware/fw_jump.S
index 84391c96..0015a808 100644
--- a/firmware/fw_jump.S
+++ b/firmware/fw_jump.S
@@ -56,7 +56,7 @@ fw_next_arg1:
 #ifdef FW_JUMP_FDT_ADDR
 	li	a0, FW_JUMP_FDT_ADDR
 #else
-	add	a0, zero, zero
+	add	a0, a1, zero
 #endif
 	ret
 
diff --git a/firmware/fw_payload.S b/firmware/fw_payload.S
index 9f4e0ece..b9cb151b 100644
--- a/firmware/fw_payload.S
+++ b/firmware/fw_payload.S
@@ -60,7 +60,7 @@ fw_next_arg1:
 #ifdef FW_PAYLOAD_FDT_ADDR
 	li	a0, FW_PAYLOAD_FDT_ADDR
 #else
-	add	a0, zero, zero
+	add	a0, a1, zero
 #endif
 	ret