diff --git a/win32/installer/hexchat-x64.skel.iss b/win32/installer/hexchat-x64.skel.iss
index 61486190..799f224f 100644
--- a/win32/installer/hexchat-x64.skel.iss
+++ b/win32/installer/hexchat-x64.skel.iss
@@ -10,7 +10,6 @@ UninstallDisplayName=HexChat (x64)
 DefaultDirName={pf}\HexChat
 DefaultGroupName=HexChat
 DisableProgramGroupPage=yes
-Compression=lzma2/ultra
 SolidCompression=yes
 SourceDir=..\rel
 OutputDir=..
diff --git a/win32/installer/hexchat-x86.skel.iss b/win32/installer/hexchat-x86.skel.iss
index 83a45bc7..21b5efda 100644
--- a/win32/installer/hexchat-x86.skel.iss
+++ b/win32/installer/hexchat-x86.skel.iss
@@ -10,7 +10,6 @@ UninstallDisplayName=HexChat (x86)
 DefaultDirName={pf}\HexChat
 DefaultGroupName=HexChat
 DisableProgramGroupPage=yes
-Compression=lzma2/ultra
 SolidCompression=yes
 SourceDir=..\rel
 OutputDir=..