diff --git a/src/plugins/projectexplorer/currentprojectfilter.cpp b/src/plugins/projectexplorer/currentprojectfilter.cpp
index 066b74b9c99..573ace278d6 100644
--- a/src/plugins/projectexplorer/currentprojectfilter.cpp
+++ b/src/plugins/projectexplorer/currentprojectfilter.cpp
@@ -31,6 +31,7 @@
 #include "currentprojectfilter.h"
 #include "projecttree.h"
 #include "project.h"
+#include "session.h"
 
 #include <utils/algorithm.h>