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-rw-r--r--src/node/interop/interop_server.js4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/node/interop/interop_server.js b/src/node/interop/interop_server.js
index c23f237680..762e670013 100644
--- a/src/node/interop/interop_server.js
+++ b/src/node/interop/interop_server.js
@@ -39,8 +39,8 @@ var _ = require('lodash');
var grpc = require('..');
var testProto = grpc.load(__dirname + '/test.proto').grpc.testing;
-var ECHO_INITIAL_KEY = "x-grpc-test-echo-initial";
-var ECHO_TRAILING_KEY = "x-grpc-test-echo-trailing-bin";
+var ECHO_INITIAL_KEY = 'x-grpc-test-echo-initial';
+var ECHO_TRAILING_KEY = 'x-grpc-test-echo-trailing-bin';
/**
* Create a buffer filled with size zeroes