diff --git a/src/plugins/help/helpplugin.cpp b/src/plugins/help/helpplugin.cpp
index 006de317078..57f6519d7e7 100644
--- a/src/plugins/help/helpplugin.cpp
+++ b/src/plugins/help/helpplugin.cpp
@@ -95,11 +95,11 @@
 
 using namespace Help::Internal;
 
-const char SB_INDEX[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Index");
-const char SB_CONTENTS[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Contents");
-const char SB_BOOKMARKS[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Bookmarks");
+static const char SB_INDEX[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Index");
+static const char SB_CONTENTS[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Contents");
+static const char SB_BOOKMARKS[] = QT_TRANSLATE_NOOP("Help::Internal::HelpPlugin", "Bookmarks");
 
-const char SB_OPENPAGES[] = "OpenPages";
+static const char SB_OPENPAGES[] = "OpenPages";
 
 static const char kExternalWindowStateKey[] = "Help/ExternalWindowState";