1559b7b
diff --git a/iconvdata/ibm930.c b/iconvdata/ibm930.c
1559b7b
index 25a9be0..6f758eb 100644
1559b7b
--- a/iconvdata/ibm930.c
1559b7b
+++ b/iconvdata/ibm930.c
1559b7b
@@ -162,7 +162,8 @@ enum
1559b7b
 	while (ch > rp2->end)						      \
1559b7b
 	  ++rp2;							      \
1559b7b
 									      \
1559b7b
-	if (__builtin_expect (ch < rp2->start, 0)			      \
1559b7b
+	if (__builtin_expect (rp2->start == 0xffff, 0)			      \
1559b7b
+	    || __builtin_expect (ch < rp2->start, 0)			      \
1559b7b
 	    || (res = __ibm930db_to_ucs4[ch + rp2->idx],		      \
1559b7b
 		__builtin_expect (res, L'\1') == L'\0' && ch != '\0'))	      \
1559b7b
 	  {								      \