diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 24d87615e45..9e25076000e 100644
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -1,5 +1,5 @@
@@ -106,7 +106,8 @@ COPY tablename [ ( filename
- The absolute path name of the input or output file.
+ The absolute path name of the input or output file. Windows users
+ might need to double backslashes used as path separators.