diff --git a/src/plugins/locator/locator.pro b/src/plugins/locator/locator.pro
index fab92816fc9..7227847c473 100644
--- a/src/plugins/locator/locator.pro
+++ b/src/plugins/locator/locator.pro
@@ -1,6 +1,6 @@
 TEMPLATE = lib
 TARGET = Locator
-DEFINES += LOCATOR_LIBRARY
+DEFINES += LOCATOR_LIBRARY QT_NO_CAST_FROM_ASCII
 include(../../qtcreatorplugin.pri)
 include(locator_dependencies.pri)
 HEADERS += locatorplugin.h \
diff --git a/src/plugins/locator/locator.qbs b/src/plugins/locator/locator.qbs
index af809cfd841..33380005a66 100644
--- a/src/plugins/locator/locator.qbs
+++ b/src/plugins/locator/locator.qbs
@@ -16,6 +16,7 @@ QtcPlugin {
         "codeassist"
     ])
 
+    cpp.defines: base.concat(["QT_NO_CAST_FROM_ASCII"])
     files: [
         "basefilefilter.cpp",
         "basefilefilter.h",
diff --git a/src/plugins/locator/settingspage.cpp b/src/plugins/locator/settingspage.cpp
index 23807c64d51..4a72047f9cd 100644
--- a/src/plugins/locator/settingspage.cpp
+++ b/src/plugins/locator/settingspage.cpp
@@ -48,7 +48,7 @@ using namespace Locator::Internal;
 SettingsPage::SettingsPage(LocatorPlugin *plugin)
     : m_plugin(plugin), m_page(0)
 {
-    setId(Constants::FILTER_OPTIONS_PAGE);
+    setId(QLatin1String(Constants::FILTER_OPTIONS_PAGE));
     setDisplayName(QCoreApplication::translate("Locator", Locator::Constants::FILTER_OPTIONS_PAGE));
     setCategory(QLatin1String(Core::Constants::SETTINGS_CATEGORY_CORE));
     setDisplayCategory(QCoreApplication::translate("Core", Core::Constants::SETTINGS_TR_CATEGORY_CORE));