diff --git a/src/server/internalServer.cpp b/src/server/internalServer.cpp
index 7ee986935..f6026a79c 100644
--- a/src/server/internalServer.cpp
+++ b/src/server/internalServer.cpp
@@ -628,8 +628,8 @@ std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& re
       // Searcher->search will throw a runtime error if there is no valid xapian database to do the search.
       // (in case of zim file not containing a index)
       return HTTPErrorHtmlResponse(*this, request, MHD_HTTP_NOT_FOUND,
-                                   "Fulltext search unavailable",
-                                   "Not Found",
+                                   "fulltext-search-unavailable",
+                                   "404-page-heading",
                                    m_root + "/skin/search_results.css")
            + noSearchResultsMsg()
            + TaskbarInfo(searchInfo.bookName, archive.get());
diff --git a/src/server/response.cpp b/src/server/response.cpp
index 09a9b4745..ca157b868 100644
--- a/src/server/response.cpp
+++ b/src/server/response.cpp
@@ -87,6 +87,11 @@ std::unique_ptr<Response> Response::build_304(const InternalServer& server, cons
 const UrlNotFoundMsg urlNotFoundMsg;
 const InvalidUrlMsg invalidUrlMsg;
 
+std::string ContentResponseBlueprint::getMessage(const std::string& msgId) const
+{
+  return getTranslatedString(m_request.get_user_language(), msgId);
+}
+
 std::unique_ptr<ContentResponse> ContentResponseBlueprint::generateResponseObject() const
 {
   auto r = ContentResponse::build(m_server, m_template, m_data, m_mimeType);
@@ -100,8 +105,8 @@ std::unique_ptr<ContentResponse> ContentResponseBlueprint::generateResponseObjec
 HTTPErrorHtmlResponse::HTTPErrorHtmlResponse(const InternalServer& server,
                                              const RequestContext& request,
                                              int httpStatusCode,
-                                             const std::string& pageTitleMsg,
-                                             const std::string& headingMsg,
+                                             const std::string& pageTitleMsgId,
+                                             const std::string& headingMsgId,
                                              const std::string& cssUrl)
   : ContentResponseBlueprint(&server,
                              &request,
@@ -112,8 +117,8 @@ HTTPErrorHtmlResponse::HTTPErrorHtmlResponse(const InternalServer& server,
   kainjow::mustache::list emptyList;
   this->m_data = kainjow::mustache::object{
                     {"CSS_URL", onlyAsNonEmptyMustacheValue(cssUrl) },
-                    {"PAGE_TITLE",   pageTitleMsg},
-                    {"PAGE_HEADING", headingMsg},
+                    {"PAGE_TITLE",   getMessage(pageTitleMsgId)},
+                    {"PAGE_HEADING", getMessage(headingMsgId)},
                     {"details", emptyList}
   };
 }
@@ -123,8 +128,8 @@ HTTP404HtmlResponse::HTTP404HtmlResponse(const InternalServer& server,
   : HTTPErrorHtmlResponse(server,
                           request,
                           MHD_HTTP_NOT_FOUND,
-                          "Content not found",
-                          "Not Found")
+                          "404-page-title",
+                          "404-page-heading")
 {
 }
 
@@ -151,8 +156,8 @@ HTTP400HtmlResponse::HTTP400HtmlResponse(const InternalServer& server,
   : HTTPErrorHtmlResponse(server,
                           request,
                           MHD_HTTP_BAD_REQUEST,
-                          "Invalid request",
-                          "Invalid request")
+                          "400-page-title",
+                          "400-page-heading")
 {
 }
 
@@ -172,8 +177,8 @@ HTTP500HtmlResponse::HTTP500HtmlResponse(const InternalServer& server,
   : HTTPErrorHtmlResponse(server,
                           request,
                           MHD_HTTP_INTERNAL_SERVER_ERROR,
-                          "Internal Server Error",
-                          "Internal Server Error")
+                          "500-page-title",
+                          "500-page-heading")
 {
   // operator+() is a state-modifying operator (akin to operator+=)
   *this + "An internal server error occured. We are sorry about that :/";
diff --git a/src/server/response.h b/src/server/response.h
index d9a0ada88..9351cf6d4 100644
--- a/src/server/response.h
+++ b/src/server/response.h
@@ -167,6 +167,7 @@ public: // functions
   ContentResponseBlueprint& operator+(const TaskbarInfo& taskbarInfo);
 
 protected: // functions
+  std::string getMessage(const std::string& msgId) const;
   virtual std::unique_ptr<ContentResponse> generateResponseObject() const;
 
 public: //data
@@ -184,8 +185,8 @@ struct HTTPErrorHtmlResponse : ContentResponseBlueprint
   HTTPErrorHtmlResponse(const InternalServer& server,
                       const RequestContext& request,
                       int httpStatusCode,
-                      const std::string& pageTitleMsg,
-                      const std::string& headingMsg,
+                      const std::string& pageTitleMsgId,
+                      const std::string& headingMsgId,
                       const std::string& cssUrl = "");
 
   using ContentResponseBlueprint::operator+;
diff --git a/static/i18n/en.json b/static/i18n/en.json
index 415d7fbd5..a6e62d51f 100644
--- a/static/i18n/en.json
+++ b/static/i18n/en.json
@@ -11,4 +11,11 @@
 	, "random-article-failure" :  "Oops! Failed to pick a random article :("
 	, "invalid-raw-data-type" : "{{DATATYPE}} is not a valid request for raw content."
 	, "raw-entry-not-found" : "Cannot find {{DATATYPE}} entry {{ENTRY}}"
+	, "400-page-title" : "Invalid request"
+	, "400-page-heading" : "Invalid request"
+	, "404-page-title" : "Content not found"
+	, "404-page-heading" : "Not Found"
+	, "500-page-title" : "Internal Server Error"
+	, "500-page-heading" : "Internal Server Error"
+	, "fulltext-search-unavailable" : "Fulltext search unavailable"
 }
diff --git a/static/i18n/hy.json b/static/i18n/hy.json
index 9b55d8c38..6120c2f0c 100644
--- a/static/i18n/hy.json
+++ b/static/i18n/hy.json
@@ -7,4 +7,6 @@
 	"suggest-full-text-search": "որոնել '{{{SEARCH_TERMS}}}'..."
 	, "no-such-book": "Գիրքը բացակայում է՝ {{BOOK_NAME}}"
 	, "url-not-found" : "Սխալ հասցե՝ {{url}}"
+	, "404-page-title" : "Սխալ հասցե"
+	, "404-page-heading" : "Սխալ հասցե"
 }
diff --git a/static/i18n/qqq.json b/static/i18n/qqq.json
index 0ade75a60..b548495a9 100644
--- a/static/i18n/qqq.json
+++ b/static/i18n/qqq.json
@@ -12,4 +12,11 @@
 	, "random-article-failure" :  "Failure of the random article selection procedure"
 	, "invalid-raw-data-type" : "Invalid DATATYPE was used with the /raw endpoint (/raw/<book>/DATATYPE/...); allowed values are 'meta' and 'content'"
 	, "raw-entry-not-found" : "Entry requested via the /raw endpoint was not found"
+	, "400-page-title" : "Title of the 400 error page"
+	, "400-page-heading" : "Heading of the 400 error page"
+	, "404-page-title" : "Title of the 404 error page"
+	, "404-page-heading" : "Heading of the 404 error page"
+	, "500-page-title" : "Title of the 500 error page"
+	, "500-page-heading" : "Heading of the 500 error page"
+	, "fulltext-search-unavailable" : "Title of the error page returned when search is attempted in a book without fulltext search database"
 }
diff --git a/test/server.cpp b/test/server.cpp
index f89e2236a..65c1376a8 100644
--- a/test/server.cpp
+++ b/test/server.cpp
@@ -572,8 +572,9 @@ TEST_F(ServerTest, 404WithBodyTesting)
 )"  },
 
     { /* url */ "/ROOT/random?content=non-existent-book&userlang=hy",
+      expected_page_title=="Սխալ հասցե" &&
       expected_body==R"(
-    <h1>Not Found</h1>
+    <h1>Սխալ հասցե</h1>
     <p>
       Գիրքը բացակայում է՝ non-existent-book
     </p>
@@ -596,8 +597,9 @@ TEST_F(ServerTest, 404WithBodyTesting)
 )"  },
 
     { /* url */ "/ROOT/catalog/?userlang=hy",
+      expected_page_title=="Սխալ հասցե" &&
       expected_body==R"(
-    <h1>Not Found</h1>
+    <h1>Սխալ հասցե</h1>
     <p>
       Սխալ հասցե՝ /ROOT/catalog/
     </p>
@@ -612,8 +614,9 @@ TEST_F(ServerTest, 404WithBodyTesting)
 )"  },
 
     { /* url */ "/ROOT/catalog/invalid_endpoint?userlang=hy",
+      expected_page_title=="Սխալ հասցե" &&
       expected_body==R"(
-    <h1>Not Found</h1>
+    <h1>Սխալ հասցե</h1>
     <p>
       Սխալ հասցե՝ /ROOT/catalog/invalid_endpoint
     </p>