diff --git a/installer/mkvtoolnix-unicode.nsi b/installer/mkvtoolnix-unicode.nsi
index 8398e1bd4..307a0635b 100644
--- a/installer/mkvtoolnix-unicode.nsi
+++ b/installer/mkvtoolnix-unicode.nsi
@@ -14,8 +14,6 @@ SetCompressor /SOLID lzma
 #SetCompress off
 SetCompressorDictSize 64
 
-!packhdr tmp.dat "upx -9 tmp.dat"
-
 !include "MUI2.nsh"
 
 # MUI Settings