diff --git a/x/ibc/03-connection/keeper/handshake.go b/x/ibc/03-connection/keeper/handshake.go
index 64cac7628b..a1814476cb 100644
--- a/x/ibc/03-connection/keeper/handshake.go
+++ b/x/ibc/03-connection/keeper/handshake.go
@@ -141,8 +141,8 @@ func (k Keeper) ConnOpenAck(
 		return sdkerrors.Wrap(types.ErrConnectionNotFound, "cannot relay ACK of open attempt")
 	}
 
-	// Check connection on ChainA is on correct state: INIT
-	if connection.State != ibctypes.INIT {
+	// Check connection on ChainA is on correct state: INIT or TRYOPEN
+	if connection.State != ibctypes.INIT && connection.State != ibctypes.TRYOPEN {
 		return sdkerrors.Wrapf(
 			types.ErrInvalidConnectionState,
 			"connection state is not INIT (got %s)", connection.State.String(),
diff --git a/x/ibc/03-connection/keeper/handshake_test.go b/x/ibc/03-connection/keeper/handshake_test.go
index ccd2071f0b..4522f1ea72 100644
--- a/x/ibc/03-connection/keeper/handshake_test.go
+++ b/x/ibc/03-connection/keeper/handshake_test.go
@@ -156,6 +156,15 @@ func (suite *KeeperTestSuite) TestConnOpenAck() {
 			suite.chainA.updateClient(suite.chainB)
 			return suite.chainB.Header.GetHeight()
 		}, true},
+		{"success from tryopen", version, func() uint64 {
+			suite.chainA.CreateClient(suite.chainB)
+			suite.chainB.CreateClient(suite.chainA)
+			suite.chainB.createConnection(testConnectionIDB, testConnectionIDA, testClientIDA, testClientIDB, ibctypes.TRYOPEN)
+			suite.chainA.createConnection(testConnectionIDA, testConnectionIDB, testClientIDB, testClientIDA, ibctypes.TRYOPEN)
+			suite.chainB.updateClient(suite.chainA)
+			suite.chainA.updateClient(suite.chainB)
+			return suite.chainB.Header.GetHeight()
+		}, true},
 		{"consensus height > latest height", version, func() uint64 {
 			return 10
 		}, false},