diff --git a/extra/udfhack/windows/64/lib_postgresqludf_sys/README.txt b/extra/udfhack/windows/64/lib_postgresqludf_sys/README.txt
index 61f055648..1a398acfd 100644
--- a/extra/udfhack/windows/64/lib_postgresqludf_sys/README.txt
+++ b/extra/udfhack/windows/64/lib_postgresqludf_sys/README.txt
@@ -1 +1 @@
-PostgreSQL does not compile under Windows 64-bit.
+PostgreSQL < 9.0 does not compile under Windows 64-bit.