diff --git a/src/lib/istream-sized.c b/src/lib/istream-sized.c
index ed6384edc9..d2509e3a16 100644
--- a/src/lib/istream-sized.c
+++ b/src/lib/istream-sized.c
@@ -90,7 +90,7 @@ static ssize_t i_stream_sized_read(struct istream_private *stream)
 		error = sstream->error_callback(&data, sstream->error_context);
 		io_stream_set_error(&stream->iostream, "%s", error);
 		i_error("read(%s) failed: %s",
-			i_stream_get_name(stream->parent),
+			i_stream_get_name(&stream->istream),
 			stream->iostream.error);
 		pos = left;
 		stream->istream.eof = TRUE;
@@ -104,7 +104,7 @@ static ssize_t i_stream_sized_read(struct istream_private *stream)
 		error = sstream->error_callback(&data, sstream->error_context);
 		io_stream_set_error(&stream->iostream, "%s", error);
 		i_error("read(%s) failed: %s",
-			i_stream_get_name(stream->parent),
+			i_stream_get_name(&stream->istream),
 			stream->iostream.error);
 		stream->istream.stream_errno = EINVAL;
 	}