diff --git a/src/compress/flate/inflate.go b/src/compress/flate/inflate.go
index 49921398e2..7efd4477ed 100644
--- a/src/compress/flate/inflate.go
+++ b/src/compress/flate/inflate.go
@@ -789,8 +789,8 @@ func (f *decompressor) Reset(r io.Reader, dict []byte) error {
 // to read the uncompressed version of r.
 // If r does not also implement io.ByteReader,
 // the decompressor may read more data than necessary from r.
-// It is the caller's responsibility to call Close on the ReadCloser
-// when finished reading.
+// The reader returns io.EOF after the final block in the DEFLATE stream has
+// been encountered. Any trailing data after the final block is ignored.
 //
 // The ReadCloser returned by NewReader also implements Resetter.
 func NewReader(r io.Reader) io.ReadCloser {