1 files changed, 3 insertions, 3 deletions
diff --git a/string.c b/string.c
index c428ea7d76..5010274cdb 100644
--- a/string.c
+++ b/string.c
@@ -1130,7 +1130,7 @@ rb_str_index_m(argc, argv, str)
       {
 	  int c = FIX2INT(sub);
 	  long len = RSTRING(str)->len;
-	  unsigned char *p = RSTRING(str)->ptr;
+	  unsigned char *p = (unsigned char*)RSTRING(str)->ptr;
 
 	  for (;pos<len;pos++) {
 	      if (p[pos] == c) return LONG2NUM(pos);
@@ -1252,8 +1252,8 @@ rb_str_rindex_m(argc, argv, str)
       case T_FIXNUM:
       {
 	  int c = FIX2INT(sub);
-	  unsigned char *p = RSTRING(str)->ptr + pos;
-	  unsigned char *pbeg = RSTRING(str)->ptr;
+	  unsigned char *p = (unsigned char*)RSTRING(str)->ptr + pos;
+	  unsigned char *pbeg = (unsigned char*)RSTRING(str)->ptr;
 
 	  if (pos == RSTRING(str)->len) {
 	      if (pos == 0) return Qnil;