diff --git a/examples/math_server.js b/examples/math_server.js
index d649b4fd..e65cfe30 100644
--- a/examples/math_server.js
+++ b/examples/math_server.js
@@ -52,7 +52,8 @@ var Server = grpc.buildServer([math.Math.service]);
  */
 function mathDiv(call, cb) {
   var req = call.request;
-  if (req.divisor == 0) {
+  // Unary + is explicit coersion to integer
+  if (+req.divisor === 0) {
     cb(new Error('cannot divide by zero'));
   }
   cb(null, {
@@ -89,7 +90,7 @@ function mathSum(call, cb) {
   // Here, call is a standard readable Node object Stream
   var sum = 0;
   call.on('data', function(data) {
-    sum += data.num | 0;
+    sum += (+data.num);
   });
   call.on('end', function() {
     cb(null, {num: sum});
@@ -104,7 +105,7 @@ function mathDivMany(stream) {
     Transform.call(this, options);
   }
   DivTransform.prototype._transform = function(div_args, encoding, callback) {
-    if (div_args.divisor == 0) {
+    if (+div_args.divisor === 0) {
       callback(new Error('cannot divide by zero'));
     }
     callback(null, {
diff --git a/interop/interop_client.js b/interop/interop_client.js
index cf75b9a7..9306317b 100644
--- a/interop/interop_client.js
+++ b/interop/interop_client.js
@@ -183,7 +183,7 @@ function pingPong(client, done) {
     assert.equal(response.payload.body.limit - response.payload.body.offset,
                  response_sizes[index]);
     index += 1;
-    if (index == 4) {
+    if (index === 4) {
       call.end();
     } else {
       call.write({
diff --git a/server.js b/server.js
index fc7144a9..fe50acb5 100644
--- a/server.js
+++ b/server.js
@@ -233,7 +233,7 @@ function Server(options) {
     function handleNewCall(event) {
       var call = event.call;
       var data = event.data;
-      if (data == null) {
+      if (data === null) {
         return;
       }
       server.requestCall(handleNewCall);