diff --git a/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj b/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
index 27d731ab2d..75cd876208 100644
--- a/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
+++ b/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
@@ -321,6 +321,10 @@
RelativePath="..\click_box.cc"
>
+
+
@@ -507,6 +511,10 @@
RelativePath="..\gtkmm2ext\click_box.h"
>
+
+