diff --git a/encoder/ratecontrol.c b/encoder/ratecontrol.c
index 0c8a6d7..bd20f01 100644
--- a/encoder/ratecontrol.c
+++ b/encoder/ratecontrol.c
@@ -470,7 +470,7 @@ int x264_ratecontrol_new( x264_t *h )
 static int parse_zone( x264_t *h, x264_zone_t *z, char *p )
 {
     int len = 0;
-    char *tok, *saveptr;
+    char *tok;
     z->param = NULL;
     z->f_bitrate_factor = 1;
     if( 3 <= sscanf(p, "%u,%u,q=%u%n", &z->i_start, &z->i_end, &z->i_qp, &len) )
@@ -489,7 +489,7 @@ static int parse_zone( x264_t *h, x264_zone_t *z, char *p )
         return 0;
     z->param = malloc( sizeof(x264_param_t) );
     memcpy( z->param, &h->param, sizeof(x264_param_t) );
-    while( (tok = strtok_r( p, ",", &saveptr )) )
+    while( (tok = strtok_r( p, ",", NULL )) )
     {
         char *val = strchr( tok, '=' );
         if( val )
@@ -513,7 +513,7 @@ static int parse_zones( x264_t *h )
     int i;
     if( h->param.rc.psz_zones && !h->param.rc.i_zones )
     {
-        char *p, *tok, *saveptr;
+        char *p, *tok;
         char *psz_zones = x264_malloc( strlen(h->param.rc.psz_zones)+1 );
         strcpy( psz_zones, h->param.rc.psz_zones );
         h->param.rc.i_zones = 1;
@@ -523,7 +523,7 @@ static int parse_zones( x264_t *h )
         p = psz_zones;
         for( i = 0; i < h->param.rc.i_zones; i++ )
         {
-            tok = strtok_r( p, "/", &saveptr );
+            tok = strtok_r( p, "/", NULL );
             if( !tok || parse_zone( h, &h->param.rc.zones[i], tok ) )
                 return -1;
             p = NULL;