diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c
index c00d4a9..8018c3b 100644
--- a/drivers/firewire/fw-transaction.c
+++ b/drivers/firewire/fw-transaction.c
@@ -650,7 +650,7 @@
 		 HEADER_GET_OFFSET_HIGH(p->header[1]) << 32) | p->header[2];
 	tcode       = HEADER_GET_TCODE(p->header[0]);
 	destination = HEADER_GET_DESTINATION(p->header[0]);
-	source      = HEADER_GET_SOURCE(p->header[0]);
+	source      = HEADER_GET_SOURCE(p->header[1]);
 
 	spin_lock_irqsave(&address_handler_lock, flags);
 	handler = lookup_enclosing_address_handler(&address_handler_list,