diff --git a/eng/tools/ToolDescriptionEvaluator/src/VectorDb/VectorDB.cs b/eng/tools/ToolDescriptionEvaluator/src/VectorDb/VectorDB.cs
index 18d4a01d5f..b1bbfd923d 100644
--- a/eng/tools/ToolDescriptionEvaluator/src/VectorDb/VectorDB.cs
+++ b/eng/tools/ToolDescriptionEvaluator/src/VectorDb/VectorDB.cs
@@ -39,13 +39,7 @@ public float Distance(float[] a, float[] b)
         if (a.Length != b.Length)
             throw new ArgumentException("Vector lengths must match");
 
-        float dotProduct = 0.0f;
-        for (int i = 0; i < a.Length; i++)
-        {
-            dotProduct += a[i] * b[i];
-        }
-
-        return dotProduct;
+        return TensorPrimitives.Dot(a.AsSpan(), b.AsSpan());
     }
 }