diff --git a/src/plugins/languageclient/languageclientcompletionassist.h b/src/plugins/languageclient/languageclientcompletionassist.h
index 6beb20042ed..fe979808912 100644
--- a/src/plugins/languageclient/languageclientcompletionassist.h
+++ b/src/plugins/languageclient/languageclientcompletionassist.h
@@ -33,6 +33,8 @@
 
 #include <utils/optional.h>
 
+#include <QPointer>
+
 #include <functional>
 
 namespace TextEditor {