diff --git a/Changes b/Changes
index a75ac3d8d..fea4660a1 100644
--- a/Changes
+++ b/Changes
@@ -1104,3 +1104,5 @@
 - Hide stats request if requested by an U-lined client. Suggested by vonitsanet (#0002865).
 - Made it so if the channel is +m but -t, you need at least voice (+v) to change the topic.
   Reported by aquanight (#0002233).
+- Made the windows installer better compress things (SolidCompression=true), suggested
+  by Trocotronic (#0002877).
diff --git a/src/win32/unrealinst.iss b/src/win32/unrealinst.iss
index d33217e7c..37048a0e5 100644
--- a/src/win32/unrealinst.iss
+++ b/src/win32/unrealinst.iss
@@ -26,6 +26,7 @@ LicenseFile=.\gpl.rtf
 LicenseFile=.\gplplusssl.rtf
 #endif
 Compression=lzma
+SolidCompression=true
 MinVersion=4.0.1111,4.0.1381
 OutputDir=../../