diff --git a/src/gui/DatabaseTabWidget.cpp b/src/gui/DatabaseTabWidget.cpp
index e529cc42..c15d16e5 100644
--- a/src/gui/DatabaseTabWidget.cpp
+++ b/src/gui/DatabaseTabWidget.cpp
@@ -503,7 +503,7 @@ DatabaseWidget* DatabaseTabWidget::currentDatabaseWidget()
     }
 }
 
-bool DatabaseTabWidget::hasLockableDatabases()
+bool DatabaseTabWidget::hasLockableDatabases() const
 {
     QHashIterator<Database*, DatabaseManagerStruct> i(m_dbList);
     while (i.hasNext()) {
diff --git a/src/gui/DatabaseTabWidget.h b/src/gui/DatabaseTabWidget.h
index 9261a065..8e8fceb3 100644
--- a/src/gui/DatabaseTabWidget.h
+++ b/src/gui/DatabaseTabWidget.h
@@ -53,7 +53,7 @@ public:
     void openDatabase(const QString& fileName, const QString& pw = QString(),
                       const QString& keyFile = QString());
     DatabaseWidget* currentDatabaseWidget();
-    bool hasLockableDatabases();
+    bool hasLockableDatabases() const;
 
     static const int LastDatabasesCount;
 
diff --git a/src/gui/DatabaseWidget.cpp b/src/gui/DatabaseWidget.cpp
index 72fe0ef7..0d0ca737 100644
--- a/src/gui/DatabaseWidget.cpp
+++ b/src/gui/DatabaseWidget.cpp
@@ -786,19 +786,19 @@ void DatabaseWidget::emitEntryContextMenuRequested(const QPoint& pos)
     Q_EMIT entryContextMenuRequested(m_entryView->viewport()->mapToGlobal(pos));
 }
 
-bool DatabaseWidget::dbHasKey()
+bool DatabaseWidget::dbHasKey() const
 {
     return m_db->hasKey();
 }
 
-bool DatabaseWidget::canDeleteCurrentGoup()
+bool DatabaseWidget::canDeleteCurrentGoup() const
 {
     bool isRootGroup = m_db->rootGroup() == m_groupView->currentGroup();
     bool isRecycleBin = m_db->metadata()->recycleBin() == m_groupView->currentGroup();
     return !isRootGroup && !isRecycleBin;
 }
 
-bool DatabaseWidget::isInSearchMode()
+bool DatabaseWidget::isInSearchMode() const
 {
     return m_entryView->inEntryListMode();
 }
@@ -825,12 +825,12 @@ void DatabaseWidget::updateFilename(const QString& fileName)
     m_filename = fileName;
 }
 
-int DatabaseWidget::numberOfSelectedEntries()
+int DatabaseWidget::numberOfSelectedEntries() const
 {
     return m_entryView->numberOfSelectedEntries();
 }
 
-QStringList DatabaseWidget::customEntryAttributes()
+QStringList DatabaseWidget::customEntryAttributes() const
 {
     Entry* entry = m_entryView->currentEntry();
     if (!entry) {
@@ -840,7 +840,7 @@ QStringList DatabaseWidget::customEntryAttributes()
     return entry->attributes()->customKeys();
 }
 
-bool DatabaseWidget::isGroupSelected()
+bool DatabaseWidget::isGroupSelected() const
 {
     return m_groupView->currentGroup() != Q_NULLPTR;
 }
diff --git a/src/gui/DatabaseWidget.h b/src/gui/DatabaseWidget.h
index b159cbd1..155942a5 100644
--- a/src/gui/DatabaseWidget.h
+++ b/src/gui/DatabaseWidget.h
@@ -62,18 +62,18 @@ public:
     GroupView* groupView();
     EntryView* entryView();
     Database* database();
-    bool dbHasKey();
-    bool canDeleteCurrentGoup();
-    bool isInSearchMode();
+    bool dbHasKey() const;
+    bool canDeleteCurrentGoup() const;
+    bool isInSearchMode() const;
     int addWidget(QWidget* w);
     void setCurrentIndex(int index);
     void setCurrentWidget(QWidget* widget);
     DatabaseWidget::Mode currentMode() const;
     void lock();
     void updateFilename(const QString& filename);
-    int numberOfSelectedEntries();
-    QStringList customEntryAttributes();
-    bool isGroupSelected();
+    int numberOfSelectedEntries() const;
+    QStringList customEntryAttributes() const;
+    bool isGroupSelected()const ;
     bool isInEditMode() const;
 
 Q_SIGNALS: