diff --git a/.changes/next-release/bugfix-s3-a986db56.json b/.changes/next-release/bugfix-s3-a986db56.json
new file mode 100644
index 0000000000..220934c94d
--- /dev/null
+++ b/.changes/next-release/bugfix-s3-a986db56.json
@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "s3",
+  "description": "handle 'continue' event only once"
+}
\ No newline at end of file
diff --git a/lib/http/node.js b/lib/http/node.js
index be69f691d7..a4c4a34fd7 100644
--- a/lib/http/node.js
+++ b/lib/http/node.js
@@ -98,7 +98,7 @@ AWS.NodeHttpClient = AWS.util.inherit({
 
     var expect = httpRequest.headers.Expect || httpRequest.headers.expect;
     if (expect === '100-continue') {
-      stream.on('continue', function() {
+      stream.once('continue', function() {
         self.writeBody(stream, httpRequest);
       });
     } else {