diff --git a/installer/mkvtoolnix-unicode.nsi b/installer/mkvtoolnix-unicode.nsi
index 5892e4762..7063e5cf3 100644
--- a/installer/mkvtoolnix-unicode.nsi
+++ b/installer/mkvtoolnix-unicode.nsi
@@ -80,6 +80,7 @@ Section "Program files" SEC01
   File "libintl-8.dll"
 ;   File "libmatroska.dll"
   File "magic1.dll"
+  File "mingwm10.dll"
   File "regex2.dll"
   File "zlib1.dll"
   File "matroskalogo_big.ico"
@@ -270,6 +271,7 @@ Section Uninstall
   Delete "$INSTDIR\mkvpropedit.exe"
   Delete "$INSTDIR\mmg.exe"
   Delete "$INSTDIR\magic1.dll"
+  Delete "$INSTDIR\mingwm10.dll"
   Delete "$INSTDIR\regex2.dll"
   Delete "$INSTDIR\wxbase28u_gcc_custom.dll"
   Delete "$INSTDIR\wxmsw28u_core_gcc_custom.dll"