diff --git a/dotnet/src/Connectors/Connectors.UnitTests/Memory/MongoDB/MongoDBMemoryStoreTests.cs b/dotnet/src/Connectors/Connectors.UnitTests/Memory/MongoDB/MongoDBMemoryStoreTests.cs
index 35ba7c263ac0b..9a83ce68c76cf 100644
--- a/dotnet/src/Connectors/Connectors.UnitTests/Memory/MongoDB/MongoDBMemoryStoreTests.cs
+++ b/dotnet/src/Connectors/Connectors.UnitTests/Memory/MongoDB/MongoDBMemoryStoreTests.cs
@@ -180,7 +180,7 @@ public async Task ItCanGetNearestMatchAsync(string indexName)
     {
         // Arrange
         var actualIndexName = indexName ?? "default";
-        string expectedSearchStage = $"{{ \"$vectorSearch\" : {{ \"queryVector\" : [1.0], \"path\" : \"embedding\", \"limit\" : 1, \"numCandidates\" : 10, \"index\" : \"{actualIndexName}\" }} }}";
+        string expectedStage = $"{{ \"$vectorSearch\" : {{ \"queryVector\" : [1.0], \"path\" : \"embedding\", \"limit\" : 1, \"numCandidates\" : 10, \"index\" : \"{actualIndexName}\" }} }}";
 
         using var memoryStore = new MongoDBMemoryStore(this._mongoClientMock.Object, DatabaseName, indexName);
         var memoryRecord = CreateRecord("id");
@@ -194,7 +194,7 @@ public async Task ItCanGetNearestMatchAsync(string indexName)
 
         // Assert
         AssertMemoryRecordEqual(memoryRecord, match.Value.Item1);
-        this._mongoCollectionMock.Verify(a => a.AggregateAsync(It.Is<PipelineDefinition<MongoDBMemoryEntry, MongoDBMemoryEntry>>(p => VerifyPipeline(p, expectedSearchStage)), It.IsAny<AggregateOptions>(), default), Times.Once());
+        this._mongoCollectionMock.Verify(a => a.AggregateAsync(It.Is<PipelineDefinition<MongoDBMemoryEntry, MongoDBMemoryEntry>>(p => VerifyPipeline(p, expectedStage)), It.IsAny<AggregateOptions>(), default), Times.Once());
     }
 
     [Theory]