diff --git a/src/plugins/coreplugin/mainwindow.cpp b/src/plugins/coreplugin/mainwindow.cpp
index 9c63e36e..85994c37 100644
--- a/src/plugins/coreplugin/mainwindow.cpp
+++ b/src/plugins/coreplugin/mainwindow.cpp
@@ -215,7 +215,7 @@ MainWindow::MainWindow()
         m_trimTimer.setSingleShot(true);
         m_trimTimer.setInterval(60000);
         // glibc may not actually free memory in free().
-#ifdef Q_OS_LINUX
+#if defined(Q_OS_LINUX) && defined(__GLIBC__)
         connect(&m_trimTimer, &QTimer::timeout, this, [] { malloc_trim(0); });
 #endif
     }