diff --git a/src/kamokan_impl/edit_response.hpp b/src/kamokan_impl/edit_response.hpp
index 515c4e0..0ec19af 100644
--- a/src/kamokan_impl/edit_response.hpp
+++ b/src/kamokan_impl/edit_response.hpp
@@ -36,6 +36,6 @@ namespace kamokan {
 	private:
 		virtual void on_general_mustache_prepare (std::string&& parPastie, mstch::map& parContext) override;
 		virtual tawashi::HttpHeader on_general_pastie_process() override;
-		virtual bool is_submit_page() override { return true; }
+		virtual bool is_submit_page() const override { return true; }
 	};
 } //namespace kamokan
diff --git a/src/kamokan_impl/index_response.hpp b/src/kamokan_impl/index_response.hpp
index dd1c073..d4db20a 100644
--- a/src/kamokan_impl/index_response.hpp
+++ b/src/kamokan_impl/index_response.hpp
@@ -31,7 +31,7 @@ namespace kamokan {
 
 	protected:
 		virtual boost::string_view page_basename() const override { return boost::string_view("index"); }
-		virtual bool is_submit_page() override { return true; }
+		virtual bool is_submit_page() const override { return true; }
 
 	private:
 	};
diff --git a/src/kamokan_impl/response.hpp b/src/kamokan_impl/response.hpp
index 68e9320..c19bc18 100644
--- a/src/kamokan_impl/response.hpp
+++ b/src/kamokan_impl/response.hpp
@@ -70,7 +70,7 @@ namespace kamokan {
 		virtual void on_mustache_prepare (mstch::map& parContext);
 		virtual std::string on_mustache_retrieve();
 		virtual std::string default_pastie_lang();
-		virtual bool is_submit_page() { return false; }
+		virtual bool is_submit_page() const { return false; }
 		virtual bool is_pastie_page() const { return false; }
 
 		Storage m_storage;