diff --git a/samples/runtime/oracle-emulation/PermutationOracle.cs b/samples/runtime/oracle-emulation/PermutationOracle.cs
index 280c0637e031..57282f3742c1 100644
--- a/samples/runtime/oracle-emulation/PermutationOracle.cs
+++ b/samples/runtime/oracle-emulation/PermutationOracle.cs
@@ -32,7 +32,7 @@ public static void ApplyOracle(QuantumSimulator simulator, Func<Int64, Int64, In
 
         /// <summary>
         /// Apply a permutation defined by a permutation table. This overload
-        /// allows for perfomance optimizations like reuse of permutation
+        /// allows for performance optimizations like reuse of permutation
         /// tables.
         /// </summary>
         public static void ApplyOracle(QuantumSimulator simulator, Int64[] permutation,