1 files changed, 1 insertions, 0 deletions
diff --git a/src/join.c b/src/join.c
index 992a357b1..c71669893 100644
--- a/src/join.c
+++ b/src/join.c
@@ -204,6 +204,7 @@ separated by CHAR.\n\
 \n\
 Important: FILE1 and FILE2 must be sorted on the join fields.\n\
 E.g., use `sort -k 1b,1' if `join' has no options.\n\
+Note, comparisons honor the rules specified by `LC_COLLATE'.\n\
 If the input is not sorted and some lines cannot be joined, a\n\
 warning message will be given.\n\
 "), stdout);