diff --git a/cave_data/cavealiases.txt b/cave_data/cavealiases.txt
index 00d0a98db..0d566c2a1 100644
--- a/cave_data/cavealiases.txt
+++ b/cave_data/cavealiases.txt
@@ -19,6 +19,7 @@
 ; extra blanks are ignored
 ; later aliases can reference earlier ones
 ; all upper- and lower-case variants are done automatically
+; only one alias and target per line 
 
       # ("2011-01", "1623-292"), seems to be a mistake
 
@@ -109,4 +110,5 @@
            
            
            
+           
            
\ No newline at end of file