diff --git a/utils/nio/src/test/java/org/onlab/nio/IOLoopTestClient.java b/utils/nio/src/test/java/org/onlab/nio/IOLoopTestClient.java
index bdcc97a..bbeedd0 100644
--- a/utils/nio/src/test/java/org/onlab/nio/IOLoopTestClient.java
+++ b/utils/nio/src/test/java/org/onlab/nio/IOLoopTestClient.java
@@ -230,7 +230,7 @@
         }
 
         @Override
-        protected void connect(SelectionKey key) {
+        protected void connect(SelectionKey key) throws IOException {
             super.connect(key);
             TestMessageStream b = (TestMessageStream) key.attachment();
             Worker w = ((CustomIOLoop) b.loop()).worker;