diff --git a/src/Tests/LookupTests.cs b/src/Tests/LookupTests.cs
index 3ba250b..fa2ce75 100644
--- a/src/Tests/LookupTests.cs
+++ b/src/Tests/LookupTests.cs
@@ -10,11 +10,11 @@ public class LookupTests
         [Test]
         public void should_lookup_zip_code_by_coords()
         {
-            var coordinate = Spatial.Search(-108.491240, 39.079600);
+            var coordinate = Spatial.Search(39.079600, -108.491240);
 
             coordinate.Zip.ToString().ShouldEqual("81504");
-            coordinate.Latitude.ShouldEqual(-108.491247);
-            coordinate.Longitude.ShouldEqual(39.079602);
+            coordinate.Longitude.ShouldEqual(-108.491247);
+            coordinate.Latitude.ShouldEqual(39.079602);
         }
 
         [Test]
@@ -23,8 +23,8 @@ public void should_lookup_coords_by_zip_code()
             var coordinate = Spatial.Search("81504");
 
             coordinate.Zip.ToString().ShouldEqual("81504");
-            coordinate.Latitude.ShouldEqual(-108.491247);
-            coordinate.Longitude.ShouldEqual(39.079602);
+            coordinate.Longitude.ShouldEqual(-108.491247);
+            coordinate.Latitude.ShouldEqual(39.079602);
         }
 
         [Test]
diff --git a/src/ZipCodeCoords/Spatial.cs b/src/ZipCodeCoords/Spatial.cs
index 2681e1a..8128b82 100644
--- a/src/ZipCodeCoords/Spatial.cs
+++ b/src/ZipCodeCoords/Spatial.cs
@@ -33,8 +33,8 @@ private static List<Coordinate> LoadCoordinates()
                 do
                 {
                     var zipCode = reader.ReadInt32();
-                    var latitude = reader.ReadDouble();
                     var longitude = reader.ReadDouble();
+                    var latitude = reader.ReadDouble();
                     coordinates.Add(new Coordinate(new ZipCode(zipCode), latitude, longitude));
                 } while (reader.BaseStream.Position < reader.BaseStream.Length);
             }