diff --git a/reference/filesystem/functions/fputcsv.xml b/reference/filesystem/functions/fputcsv.xml
index 29d6f0ed94..494367a320 100644
--- a/reference/filesystem/functions/fputcsv.xml
+++ b/reference/filesystem/functions/fputcsv.xml
@@ -70,6 +70,13 @@
+
+
+ If an enclosure character is contained in a field,
+ it will be escaped by doubling it, unless it is immediately preceded by an
+ escape_char.
+
+