diff --git a/qemu.nsi b/qemu.nsi
index c3df8c9d3b..6edd82b385 100644
--- a/qemu.nsi
+++ b/qemu.nsi
@@ -35,6 +35,9 @@
 !define OUTFILE "qemu-setup.exe"
 !endif
 
+; Build a unicode installer
+Unicode true
+
 ; Use maximum compression.
 SetCompressor /SOLID lzma