diff --git a/openflow_input/standard-1.2 b/openflow_input/standard-1.2
index 9a48154..90447f5 100644
--- a/openflow_input/standard-1.2
+++ b/openflow_input/standard-1.2
@@ -1114,7 +1114,7 @@
     of_octets_t data;
 };
 
-struct of_experimenter_error_msg {
+struct of_experimenter_error_msg : of_error_msg {
     uint8_t version;
     uint8_t type == 1;
     uint16_t length;
diff --git a/openflow_input/standard-1.3 b/openflow_input/standard-1.3
index e7a1362..bedb533 100644
--- a/openflow_input/standard-1.3
+++ b/openflow_input/standard-1.3
@@ -1338,7 +1338,7 @@
     of_octets_t data;
 };
 
-struct of_experimenter_error_msg {
+struct of_experimenter_error_msg : of_error_msg {
     uint8_t version;
     uint8_t type == 1;
     uint16_t length;