diff --git a/src/core/EntryAttachments.cpp b/src/core/EntryAttachments.cpp
index 0326dd62f1..21987f0f6f 100644
--- a/src/core/EntryAttachments.cpp
+++ b/src/core/EntryAttachments.cpp
@@ -27,6 +27,7 @@
 #include <QProcessEnvironment>
 #include <QScopeGuard>
 #include <QSet>
+#include <QStandardPaths>
 #include <QTemporaryFile>
 #include <QUrl>