diff --git a/modules/openapi-generator/src/main/resources/cpp-pistache-server/helpers-header.mustache b/modules/openapi-generator/src/main/resources/cpp-pistache-server/helpers-header.mustache
index ca7d7c684dd..4ea12ef9481 100644
--- a/modules/openapi-generator/src/main/resources/cpp-pistache-server/helpers-header.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-pistache-server/helpers-header.mustache
@@ -84,10 +84,10 @@ namespace {{helpersNamespace}}
     }
 
     /// <summary>
-    /// Determine if the given vector<T> only has unique elements. T must provide the == operator.
+    /// Determine if the given set<T> only has unique elements.
     /// </summary>
     template <typename T>
-    bool hasOnlyUniqueItems(const std::set<T>& set)
+    bool hasOnlyUniqueItems(const std::set<T>&)
     {
         return true;
     }
diff --git a/samples/server/petstore/cpp-pistache-everything/model/Helpers.h b/samples/server/petstore/cpp-pistache-everything/model/Helpers.h
index 832ac04c98e..0ab06c03df4 100644
--- a/samples/server/petstore/cpp-pistache-everything/model/Helpers.h
+++ b/samples/server/petstore/cpp-pistache-everything/model/Helpers.h
@@ -94,10 +94,10 @@ namespace org::openapitools::server::helpers
     }
 
     /// <summary>
-    /// Determine if the given vector<T> only has unique elements. T must provide the == operator.
+    /// Determine if the given set<T> only has unique elements.
     /// </summary>
     template <typename T>
-    bool hasOnlyUniqueItems(const std::set<T>& set)
+    bool hasOnlyUniqueItems(const std::set<T>&)
     {
         return true;
     }
diff --git a/samples/server/petstore/cpp-pistache-nested-schema-refs/model/Helpers.h b/samples/server/petstore/cpp-pistache-nested-schema-refs/model/Helpers.h
index f053b1a91a3..9637a1cb6af 100644
--- a/samples/server/petstore/cpp-pistache-nested-schema-refs/model/Helpers.h
+++ b/samples/server/petstore/cpp-pistache-nested-schema-refs/model/Helpers.h
@@ -94,10 +94,10 @@ namespace org::openapitools::server::helpers
     }
 
     /// <summary>
-    /// Determine if the given vector<T> only has unique elements. T must provide the == operator.
+    /// Determine if the given set<T> only has unique elements.
     /// </summary>
     template <typename T>
-    bool hasOnlyUniqueItems(const std::set<T>& set)
+    bool hasOnlyUniqueItems(const std::set<T>&)
     {
         return true;
     }
diff --git a/samples/server/petstore/cpp-pistache/model/Helpers.h b/samples/server/petstore/cpp-pistache/model/Helpers.h
index 832ac04c98e..0ab06c03df4 100644
--- a/samples/server/petstore/cpp-pistache/model/Helpers.h
+++ b/samples/server/petstore/cpp-pistache/model/Helpers.h
@@ -94,10 +94,10 @@ namespace org::openapitools::server::helpers
     }
 
     /// <summary>
-    /// Determine if the given vector<T> only has unique elements. T must provide the == operator.
+    /// Determine if the given set<T> only has unique elements.
     /// </summary>
     template <typename T>
-    bool hasOnlyUniqueItems(const std::set<T>& set)
+    bool hasOnlyUniqueItems(const std::set<T>&)
     {
         return true;
     }