diff --git a/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj b/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
index 75cd876208..1e100097f9 100644
--- a/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
+++ b/libs/gtkmm2ext/MSVCgtkmm2ext/gtkmm2ext.vcproj
@@ -333,6 +333,10 @@
 				RelativePath="..\dndtreeview.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\emscale.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\fastmeter.cc"
 				>
@@ -531,6 +535,10 @@
 				RelativePath="..\gtkmm2ext\doi.h"
 				>
 			</File>
+			<File
+				RelativePath="..\gtkmm2ext\emscale.h"
+				>
+			</File>
 			<File
 				RelativePath="..\gtkmm2ext\fastmeter.h"
 				>