1 files changed, 7 insertions, 2 deletions
diff --git a/strings/ctype-sjis.c b/strings/ctype-sjis.c
index 4176ff2e538..a8b5394f8c5 100644
--- a/strings/ctype-sjis.c
+++ b/strings/ctype-sjis.c
@@ -4581,14 +4581,19 @@ uint my_well_formed_len_sjis(CHARSET_INFO *cs __attribute__((unused)),
     */
     if (((int8)b[0]) >= 0)
     {
-      /* Single byte character */
-      b+= 1;
+      /* Single byte ascii character */
+      b++;
     }
     else  if (issjishead((uchar)*b) && (e-b)>1 && issjistail((uchar)b[1]))
     {
       /* Double byte character */
       b+= 2;
     }
+    else if (((uchar)*b) >= 0xA1 && ((uchar)*b) <= 0xDF)
+    {
+      /* Half width kana */
+      b++;
+    }
     else
     {
       /* Wrong byte sequence */