diff --git a/src/core/engine.h b/src/core/engine.h
--- a/src/core/engine.h
+++ b/src/core/engine.h
@@ -178,12 +178,27 @@
     void requestMoreData();
     void requestData(int page, int pageSize);
 
+    /**
+     * Request for packages that are installed and need update
+     *
+     * These will be reported through the signal @sa signalUpdateableEntriesLoaded().
+     */
     void checkForUpdates();
+
+    /**
+     * Requests installed packages with an up to date state
+     *
+     * @note it will reset the engine state
+     *
+     * @sa signalEntriesLoaded()
+     */
     void checkForInstalled();
 
     /**
      * Convenience method to launch a search for one specific entry.
      *
+     * @note it will reset the engine state
+     *
      * @param id The ID of the entry you wish to fetch
      */
     void fetchEntryById(const QString &id);
diff --git a/src/core/engine.cpp b/src/core/engine.cpp
--- a/src/core/engine.cpp
+++ b/src/core/engine.cpp
@@ -609,19 +609,20 @@
 
 void Engine::checkForUpdates()
 {
+    const Provider::SearchRequest request(KNSCore::Provider::Newest, KNSCore::Provider::Updates);
+
     foreach (QSharedPointer<Provider> p, m_providers) {
-        Provider::SearchRequest request(KNSCore::Provider::Newest, KNSCore::Provider::Updates);
         p->loadEntries(request);
     }
 }
 
 void KNSCore::Engine::checkForInstalled()
 {
+    m_currentRequest = Provider::SearchRequest(KNSCore::Provider::Newest, KNSCore::Provider::Updates);
+    m_currentPage = -1;
+
     foreach (QSharedPointer<Provider> p, m_providers) {
-        Provider::SearchRequest request(KNSCore::Provider::Newest, KNSCore::Provider::Installed);
-        request.page = 0;
-        request.pageSize = m_pageSize;
-        p->loadEntries(request);
+        p->loadEntries(m_currentRequest);
     }
 }