diff --git a/openflow_input/standard-1.1 b/openflow_input/standard-1.1
index bbf2277..9acbacf 100644
--- a/openflow_input/standard-1.1
+++ b/openflow_input/standard-1.1
@@ -856,7 +856,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;
@@ -877,7 +877,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;
@@ -898,7 +898,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;
@@ -919,7 +919,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;
@@ -940,7 +940,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;
@@ -961,7 +961,7 @@
     uint32_t buffer_id;
     of_port_no_t out_port;
     uint32_t out_group;
-    ofp_flow_mod_flags flags;
+    enum ofp_flow_mod_flags flags;
     pad(2);
     of_match_t match;
     list(of_instruction_t) instructions;