diff --git a/include/search_renderer.h b/include/search_renderer.h
index cd499d13..10721be0 100644
--- a/include/search_renderer.h
+++ b/include/search_renderer.h
@@ -81,9 +81,9 @@ class SearchRenderer
   void setSearchPattern(const std::string& pattern);
 
   /**
-   * Set the search content id.
+   * Set the book names used to do the search.
    */
-  void setSearchContent(const std::string& name);
+  void setSearchBookIds(const std::set<std::string>& bookIds);
 
   /**
    * Set protocol prefix.
@@ -112,7 +112,7 @@ class SearchRenderer
   zim::SearchResultSet m_srs;
   NameMapper* mp_nameMapper;
   Library* mp_library;
-  std::string searchContent;
+  std::set<std::string> searchBookIds;
   std::string searchPattern;
   std::string protocolPrefix;
   std::string searchProtocolPrefix;
diff --git a/src/search_renderer.cpp b/src/search_renderer.cpp
index 8f968556..2c4e29f0 100644
--- a/src/search_renderer.cpp
+++ b/src/search_renderer.cpp
@@ -71,9 +71,9 @@ void SearchRenderer::setSearchPattern(const std::string& pattern)
   searchPattern = pattern;
 }
 
-void SearchRenderer::setSearchContent(const std::string& content)
+void SearchRenderer::setSearchBookIds(const std::set<std::string>& bookIds)
 {
-  searchContent = content;
+  searchBookIds = bookIds;
 }
 
 void SearchRenderer::setProtocolPrefix(const std::string& prefix)
@@ -90,13 +90,15 @@ kainjow::mustache::data buildQueryData
 (
   const std::string& searchProtocolPrefix,
   const std::string& pattern,
-  const std::string& searchContent
+  const std::set<std::string>& bookIds
 ) {
   kainjow::mustache::data query;
   query.set("pattern", kiwix::encodeDiples(pattern));
   std::ostringstream ss;
   ss << searchProtocolPrefix << "?pattern=" << urlEncode(pattern, true);
-  ss << "&content=" << urlEncode(searchContent, true);
+  for (auto& bookId: bookIds) {
+    ss << "&books.id="<<urlEncode(bookId, true);
+  }
   query.set("unpaginatedQuery", ss.str());
   return query;
 }
@@ -197,7 +199,7 @@ std::string SearchRenderer::getHtml()
   kainjow::mustache::data query = buildQueryData(
     searchProtocolPrefix,
     searchPattern,
-    searchContent
+    searchBookIds
   );
 
   std::string template_str = RESOURCE::templates::search_result_html;
diff --git a/src/server/internalServer.cpp b/src/server/internalServer.cpp
index bc8bb6c9..3f31b1ce 100644
--- a/src/server/internalServer.cpp
+++ b/src/server/internalServer.cpp
@@ -711,8 +711,7 @@ std::unique_ptr<Response> InternalServer::handle_search(const RequestContext& re
     SearchRenderer renderer(search->getResults(start, pageLength), mp_nameMapper, mp_library, start,
                             search->getEstimatedMatches());
     renderer.setSearchPattern(searchInfo.pattern);
-    //[TODO]
-    //renderer.setSearchContent(searchInfo.bookNames);
+    renderer.setSearchBookIds(bookIds);
     renderer.setProtocolPrefix(m_root + "/");
     renderer.setSearchProtocolPrefix(m_root + "/search");
     renderer.setPageLength(pageLength);
diff --git a/test/server.cpp b/test/server.cpp
index 4054a49b..8b4e6b48 100644
--- a/test/server.cpp
+++ b/test/server.cpp
@@ -1611,7 +1611,7 @@ TEST_F(TaskbarlessServerTest, searchResults)
 
     static std::string makeUrl(const std::string pattern, int start, size_t resultsPerPage)
     {
-      std::string url = "/ROOT/search?pattern=" + pattern + "&content=zimfile";
+      std::string url = "/ROOT/search?pattern=" + pattern + "&books.id=6f1d19d0-633f-087b-fb55-7ac324ff9baf";
 
       if ( start >= 0 ) {
         url += "&start=" + to_string(start);