diff --git a/MapControl/Shared/WmtsTileSource.cs b/MapControl/Shared/WmtsTileSource.cs
index 1f2cd6fc..985917c3 100644
--- a/MapControl/Shared/WmtsTileSource.cs
+++ b/MapControl/Shared/WmtsTileSource.cs
@@ -18,7 +18,7 @@ namespace MapControl
         {
             Uri uri = null;
 
-            if (tileMatrixes.Count > zoomLevel)
+            if (zoomLevel < tileMatrixes.Count)
             {
                 var uriBuilder = new StringBuilder(UriTemplate);