diff --git a/src/protocol.cpp b/src/protocol.cpp
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -227,6 +227,8 @@
             return cmd.append(NetMsgType::MERKLEBLOCK);
         case MSG_CMPCT_BLOCK:
             return cmd.append(NetMsgType::CMPCTBLOCK);
+        case MSG_AVA_PROOF:
+            return cmd.append(NetMsgType::AVAPROOF);
         default:
             throw std::out_of_range(
                 strprintf("CInv::GetCommand(): type=%d unknown type", type));
diff --git a/src/test/inv_tests.cpp b/src/test/inv_tests.cpp
--- a/src/test/inv_tests.cpp
+++ b/src/test/inv_tests.cpp
@@ -24,6 +24,8 @@
               false, true);
     CheckType(GetDataMsg::MSG_CMPCT_BLOCK, GetDataMsg::MSG_CMPCT_BLOCK, false,
               true);
+    CheckType(GetDataMsg::MSG_AVA_PROOF, GetDataMsg::MSG_AVA_PROOF, false,
+              false);
 }
 
 static void CheckCommand(int type, std::string expected) {
@@ -37,6 +39,7 @@
     CheckCommand(GetDataMsg::MSG_BLOCK, "block");
     CheckCommand(GetDataMsg::MSG_FILTERED_BLOCK, "merkleblock");
     CheckCommand(GetDataMsg::MSG_CMPCT_BLOCK, "cmpctblock");
+    CheckCommand(GetDataMsg::MSG_AVA_PROOF, "avaproof");
 }
 
 BOOST_AUTO_TEST_SUITE_END()