diff --git a/aer.h b/aer.h
index 2061a93..00d98cd 100644
--- a/aer.h
+++ b/aer.h
@@ -1,6 +1,8 @@
 #ifndef AER_H
 #define AER_H
 
+#include <stdint.h>
+
 struct aer_error_inj
 {
 	int8_t bus;
@@ -12,6 +14,7 @@
 	int32_t header_log1;
 	int32_t header_log2;
 	int32_t header_log3;
+	uint16_t domain;
 };
 
 #define  PCI_ERR_UNC_TRAIN	0x00000001	/* Training */
diff --git a/aer.lex b/aer.lex
index b3c6a30..b79733a 100644
--- a/aer.lex
+++ b/aer.lex
@@ -53,6 +53,7 @@
 #define KEY(x) { #x, x }
 #define KEYVAL(x,v) { #x, x, v }
 	KEY(AER),
+	KEY(DOMAIN),
 	KEY(BUS),
 	KEY(DEV),
 	KEY(FN),
diff --git a/aer.y b/aer.y
index 80b002e..f30ad8b 100644
--- a/aer.y
+++ b/aer.y
@@ -27,7 +27,7 @@
 
 %}
 
-%token AER BUS DEV FN UNCOR_STATUS COR_STATUS HEADER_LOG
+%token AER DOMAIN BUS DEV FN UNCOR_STATUS COR_STATUS HEADER_LOG
 %token TRAIN DLP POISON_TLP FCP COMP_TIME COMP_ABORT UNX_COMP RX_OVER MALF_TLP
 %token ECRC UNSUP
 %token RCVR BAD_TLP BAD_DLLP REP_ROLL REP_TIMER
@@ -48,7 +48,12 @@
 
 aer_term: UNCOR_STATUS uncor_status_list	{ aerr.uncor_status = $2; }
 	| COR_STATUS cor_status_list		{ aerr.cor_status = $2; }
-	| BUS NUMBER DEV NUMBER FN NUMBER	{ aerr.bus = $2;
+	| DOMAIN NUMBER BUS NUMBER DEV NUMBER FN NUMBER  { aerr.domain = $2;
+	  	     	    	       	  	  aerr.bus = $4;
+						  aerr.dev = $6;
+						  aerr.fn = $8; }
+	| BUS NUMBER DEV NUMBER FN NUMBER	{ aerr.domain = 0;
+						  aerr.bus = $2;
 						  aerr.dev = $4;
 						  aerr.fn = $6; }
 	| HEADER_LOG NUMBER NUMBER NUMBER NUMBER { aerr.header_log0 = $2;