diff --git a/src/encoding/csv/reader.go b/src/encoding/csv/reader.go
index 37bf80ceaed..a6bb780bf28 100644
--- a/src/encoding/csv/reader.go
+++ b/src/encoding/csv/reader.go
@@ -155,7 +155,7 @@ func (r *Reader) Read() (record []string, err error) {
 
 // ReadAll reads all the remaining records from r.
 // Each record is a slice of fields.
-// A successful call returns err == nil, not err == EOF. Because ReadAll is
+// A successful call returns err == nil, not err == io.EOF. Because ReadAll is
 // defined to read until EOF, it does not treat end of file as an error to be
 // reported.
 func (r *Reader) ReadAll() (records [][]string, err error) {