diff --git a/src/libs/clangsupport/projectpartid.h b/src/libs/clangsupport/projectpartid.h
index 335a0f0cc55..7887e99a91a 100644
--- a/src/libs/clangsupport/projectpartid.h
+++ b/src/libs/clangsupport/projectpartid.h
@@ -27,6 +27,8 @@
 
 #include <QDataStream>
 
+#include <vector>
+
 namespace ClangBackEnd {
 
 class ProjectPartId