diff --git a/src/main/java/com/smartystreets/api/us_reverse_geo/Client.java b/src/main/java/com/smartystreets/api/us_reverse_geo/Client.java
index 958c5c4..1cd59dd 100644
--- a/src/main/java/com/smartystreets/api/us_reverse_geo/Client.java
+++ b/src/main/java/com/smartystreets/api/us_reverse_geo/Client.java
@@ -24,7 +24,7 @@ public void send(Lookup lookup) throws SmartyException, IOException, Interrupted
         DecimalFormat decimalFormat = new DecimalFormat("#.########");
         request.putParameter("latitude", decimalFormat.format(lookup.getLatitude()));
         request.putParameter("longitude", decimalFormat.format(lookup.getLongitude()));
-        request.putParameter("source", getSource();
+        request.putParameter("source", getSource());
 
         Response httpResponse = this.sender.send(request);
 
diff --git a/src/main/java/com/smartystreets/api/us_reverse_geo/Lookup.java b/src/main/java/com/smartystreets/api/us_reverse_geo/Lookup.java
index fb6706a..f43112f 100644
--- a/src/main/java/com/smartystreets/api/us_reverse_geo/Lookup.java
+++ b/src/main/java/com/smartystreets/api/us_reverse_geo/Lookup.java
@@ -16,11 +16,10 @@ public class Lookup implements Serializable {
 
     public Lookup() { this.response = new SmartyResponse(); }
 
-    public Lookup(double latitude, double longitude, String source) {
+    public Lookup(double latitude, double longitude) {
         this();
         this.latitude = latitude;
         this.longitude = longitude;
-        this.source = source;
     }
 
     public Double getLatitude() { return this.latitude; }
@@ -29,6 +28,8 @@ public Lookup(double latitude, double longitude, String source) {
 
     public String getSource() { return this.source; }
 
+    public void setSource(String source) { this.source = source; }
+
     public SmartyResponse getResponse() { return this.response; }
 
     public void setResponse(SmartyResponse response) {
diff --git a/src/test/java/com/smartystreets/api/us_reverse_geo/ClientTest.java b/src/test/java/com/smartystreets/api/us_reverse_geo/ClientTest.java
index d8bff79..2e6f9c1 100644
--- a/src/test/java/com/smartystreets/api/us_reverse_geo/ClientTest.java
+++ b/src/test/java/com/smartystreets/api/us_reverse_geo/ClientTest.java
@@ -20,7 +20,7 @@ public void testAddressLookupSerializedAndSentWithContext() throws Exception {
         Lookup lookup = new Lookup(44.888888888, -111.111111111);
         client.send(lookup);
 
-        assertEquals("http://localhost/lookup?latitude=44.88888889&longitude=-111.11111111", capturingSender.getRequest().getUrl());
+        assertEquals("http://localhost/lookup?latitude=44.88888889&longitude=-111.11111111&source=", capturingSender.getRequest().getUrl());
     }
 
     //endregion