diff --git a/src/include/access/xlogreader.h b/src/include/access/xlogreader.h
index 262bf0e77f..cb864a86d8 100644
--- a/src/include/access/xlogreader.h
+++ b/src/include/access/xlogreader.h
@@ -124,7 +124,7 @@ struct XLogReaderState
 	XLogRecPtr	currRecPtr;		/* beginning of the WAL record being read */
 
 	/* return from page reader */
-	int32		readLen;		/* bytes acutually read, must be larger than
+	int32		readLen;		/* bytes acutually read, must be at least
 								 * loadLen. -1 on error. */
 	TimeLineID	readPageTLI;	/* TLI for data currently in readBuf */