diff --git a/encoding/thrift/outbound_nowire_test.go b/encoding/thrift/outbound_nowire_test.go
index 194212aed..369d5635f 100644
--- a/encoding/thrift/outbound_nowire_test.go
+++ b/encoding/thrift/outbound_nowire_test.go
@@ -34,6 +34,7 @@ import (
 	"go.uber.org/thriftrw/protocol"
 	tbinary "go.uber.org/thriftrw/protocol/binary"
 	"go.uber.org/thriftrw/protocol/stream"
+	"go.uber.org/thriftrw/thrifttest"
 	"go.uber.org/thriftrw/thrifttest/streamtest"
 	"go.uber.org/thriftrw/wire"
 	"go.uber.org/yarpc/api/transport"
@@ -319,6 +320,17 @@ func TestNoWireClientOneway(t *testing.T) {
 	}
 }
 
+func TestNoNewWireBadProtocolConfig(t *testing.T) {
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+
+	proto := thrifttest.NewMockProtocol(mockCtrl)
+	assert.Panics(t,
+		func() {
+			NewNoWire(Config{}, Protocol(proto))
+		})
+}
+
 // encodeThriftString prefixes the passed in string with an int32 that contains
 // the length of the string, compliant to the Thrift protocol.
 func encodeThriftString(t *testing.T, s string) string {