diff --git a/tests/ZB.MOM.WW.ScadaBridge.TemplateEngine.Tests/Flattening/ConnectionBindingOverrideTests.cs b/tests/ZB.MOM.WW.ScadaBridge.TemplateEngine.Tests/Flattening/ConnectionBindingOverrideTests.cs
index cfbe30f6..f3db7c93 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.TemplateEngine.Tests/Flattening/ConnectionBindingOverrideTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.TemplateEngine.Tests/Flattening/ConnectionBindingOverrideTests.cs
@@ -80,4 +80,40 @@ public class ConnectionBindingOverrideTests
         var attr = result.Value.Attributes.Single(a => a.CanonicalName == "Speed");
         Assert.Equal("TemplateDefault", attr.DataSourceReference);
     }
+
+    [Fact]
+    public void Override_change_changes_revision_hash()
+    {
+        var template = CreateTemplateWithDataSourcedAttribute("Speed", dataSourceReference: "TemplateDefault");
+
+        var instance1 = CreateInstance();
+        instance1.ConnectionBindings.Add(new InstanceConnectionBinding("Speed")
+        {
+            DataConnectionId = 1,
+            DataSourceReferenceOverride = "ns=2;s=Pump1.Speed"
+        });
+
+        var instance2 = CreateInstance();
+        instance2.ConnectionBindings.Add(new InstanceConnectionBinding("Speed")
+        {
+            DataConnectionId = 1,
+            DataSourceReferenceOverride = "ns=2;s=Pump2.Speed"
+        });
+
+        var connections = SingleConnection(id: 1);
+        var compositionMap = new Dictionary<int, IReadOnlyList<TemplateComposition>>();
+        var composedChains = new Dictionary<int, IReadOnlyList<Template>>();
+
+        var result1 = _sut.Flatten(instance1, [template], compositionMap, composedChains, connections);
+        var result2 = _sut.Flatten(instance2, [template], compositionMap, composedChains, connections);
+
+        Assert.True(result1.IsSuccess);
+        Assert.True(result2.IsSuccess);
+
+        var hasher = new RevisionHashService();
+        var hash1 = hasher.ComputeHash(result1.Value);
+        var hash2 = hasher.ComputeHash(result2.Value);
+
+        Assert.NotEqual(hash1, hash2);
+    }
 }