diff --git a/development/scons/scons_manifest.py b/development/scons/scons_manifest.py
index ad37d147f2..1bafaacb3e 100644
--- a/development/scons/scons_manifest.py
+++ b/development/scons/scons_manifest.py
@@ -302,6 +302,7 @@ src_support_header_files = Split('''
     lyxalgo.h
     lyxlib.h
     lyxtime.h
+    numpunct_lyx_char_type.h
     Messages.h
     os.h
     os_win32.h