diff --git a/src/node/stress/stress_client.js b/src/node/stress/stress_client.js
index 8332652e2a9..6054d3a2530 100644
--- a/src/node/stress/stress_client.js
+++ b/src/node/stress/stress_client.js
@@ -102,7 +102,7 @@ function main() {
   var argv = parseArgs(process.argv, {
     string: ['server_addresses', 'test_cases', 'metrics_port'],
     default: {'server_addresses': 'localhost:8080',
-              'test_duration-secs': -1,
+              'test_duration_secs': -1,
               'num_channels_per_server': 1,
               'num_stubs_per_channel': 1,
               'metrics_port': '8081'}
@@ -118,8 +118,8 @@ function main() {
   }));
   start(server_addresses, test_cases, argv.num_channels_per_server,
         argv.num_stubs_per_channel, argv.metrics_port);
-  if (argv['test_duration-secs'] > -1) {
-    setTimeout(stop, argv['test_duration-secs'] * 1000);
+  if (argv.test_duration_secs > -1) {
+    setTimeout(stop, argv.test_duration_secs * 1000);
   }
 }
 
diff --git a/tools/run_tests/stress_test/STRESS_CLIENT_SPEC.md b/tools/run_tests/stress_test/STRESS_CLIENT_SPEC.md
index f9b16672803..62ca8aff2cd 100644
--- a/tools/run_tests/stress_test/STRESS_CLIENT_SPEC.md
+++ b/tools/run_tests/stress_test/STRESS_CLIENT_SPEC.md
@@ -19,7 +19,7 @@ Parameter             |                    Description
 ----------------------|---------------------------------
 `--server_addresses`    | The stress client should accept a list of server addresses in the following format:<br> ```<name_1>:<port_1>,<name_2>:<port_2>..<name_N>:<port_N>``` <br> _Note:_ `<name>` can be either server name or IP address.<br><br>_Type:_ string <br>_default:_ ```localhost:8080``` <br>_Example:_ ``foo.foobar.com:8080,bar.foobar.com:8080`` <br><br> Currently, the stress test framework only passes one server address to the client.
 `--test_cases`        |   List of test cases along with the relative weights in the following format:<br> `<testcase_1:w_1>,<testcase_2:w_2>...<testcase_n:w_n>`. <br> The test cases names are the same as those currently used by the interop clients<br><br>_Type:_ string <br>_Example:_ `empty_unary:20,large_unary:10,empty_stream:70` <br>(The stress client would then make `empty_unary` calls 20% of the time, `large_unary` calls 10% of the time and `empty_stream` calls 70% of the time.) <br>_Note:_ The weights need not add up to 100.
-`--test_duration-secs`      | The test duration in seconds. A value of -1 means that the test should run forever until forcefully terminated. <br>_Type:_ int <br>_default:_ -1
+`--test_duration_secs`      | The test duration in seconds. A value of -1 means that the test should run forever until forcefully terminated. <br>_Type:_ int <br>_default:_ -1
 `--num_channels_per_server` | Number of channels (i.e connections) to each server. <br> _Type:_ int <br> _default:_ 1 <br><br> _Note:_ Unfortunately, the term `channel` is used differently in `grpc-java` and `C based grpc`. In this context, this really means "number of connections to the server"
 `--num_stubs_per_channel `  | Number of client stubs per each connection to server.<br>_Type:_ int <br>_default:_ 1
 `--metrics_port`            | The port at which the stress client exposes [QPS metrics](https://github.com/grpc/grpc/blob/master/src/proto/grpc/testing/metrics.proto). <br>_Type:_ int <br>_default:_ 8081