diff --git a/installer/mkvtoolnix-unicode.nsi b/installer/mkvtoolnix-unicode.nsi
index 5d886f36d..15b64a771 100644
--- a/installer/mkvtoolnix-unicode.nsi
+++ b/installer/mkvtoolnix-unicode.nsi
@@ -127,6 +127,7 @@ Section "Program files" SEC01
   File "mkvpropedit.exe"
   File "mmg.exe"
   File "wxbase28u_gcc_custom.dll"
+  File "wxmsw28u_adv_gcc_custom.dll"
   File "wxmsw28u_core_gcc_custom.dll"
   File "wxmsw28u_html_gcc_custom.dll"
   SetOutPath "$INSTDIR\data"
@@ -404,6 +405,7 @@ Section Uninstall
   Delete "$INSTDIR\mingwm10.dll"
   Delete "$INSTDIR\regex2.dll"
   Delete "$INSTDIR\wxbase28u_gcc_custom.dll"
+  Delete "$INSTDIR\wxmsw28u_adv_gcc_custom.dll"
   Delete "$INSTDIR\wxmsw28u_core_gcc_custom.dll"
   Delete "$INSTDIR\wxmsw28u_html_gcc_custom.dll"
   Delete "$INSTDIR\zlib1.dll"