1 files changed, 1 insertions, 1 deletions

diff --git a/src/coding.c b/src/coding.c
index aeb2b355493..8c43929693e 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -1682,7 +1682,7 @@ detect_coding_utf_16 (coding, detect_info)
             }
           if (! o[c2])
             {
-              o[c1] = 1;
+              o[c2] = 1;
               o_num++;
               if (o_num >= 128)
                 break;