diff --git a/contrib/win32/mes_ucrt.sh b/contrib/win32/mes_ucrt.sh
index 11a89ea65..6292fe86e 100644
--- a/contrib/win32/mes_ucrt.sh
+++ b/contrib/win32/mes_ucrt.sh
@@ -50,7 +50,7 @@ PKG_CONFIG_PATH="$HOME/64U/lib/pkgconfig" \
 -Dopenssl=true \
 -Dpdfdoc=false \
 -Dperl=false \
--Dprefix=$HOME \
+-Dprefix=$HOME/64U \
 -Dpython=false \
 -Dquickjs=false \
 -Dreproducible=false \