diff --git a/README.md b/README.md
index 6666482..fcc62f2 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ When data is received on the socket execute the parser and check for errors.
      * Note we pass the recved==0 to http_parse_requests to signal
      * that EOF has been recieved.
      */
-    nparsed = http_parser_execute(parser, settings, buf, recved);
+    nparsed = http_parser_execute(parser, &settings, buf, recved);
 
     if (parser->upgrade) {
       /* handle new protocol */
diff --git a/http_parser.c b/http_parser.c
index 7823dd0..e7133c5 100644
--- a/http_parser.c
+++ b/http_parser.c
@@ -37,8 +37,8 @@
 
 #define CALLBACK2(FOR)                                               \
 do {                                                                 \
-  if (settings.on_##FOR) {                                           \
-    if (0 != settings.on_##FOR(parser)) return (p - data);           \
+  if (settings->on_##FOR) {                                          \
+    if (0 != settings->on_##FOR(parser)) return (p - data);          \
   }                                                                  \
 } while (0)
 
@@ -55,8 +55,8 @@ do {                                                                 \
   if (parser->FOR##_mark) {                                          \
     parser->FOR##_size += p - parser->FOR##_mark;                    \
     if (parser->FOR##_size > MAX_FIELD_SIZE) return (p - data);      \
-    if (settings.on_##FOR) {                                         \
-      if (0 != settings.on_##FOR(parser,                             \
+    if (settings->on_##FOR) {                                        \
+      if (0 != settings->on_##FOR(parser,                            \
                                  parser->FOR##_mark,                 \
                                  p - parser->FOR##_mark))            \
       {                                                              \
@@ -282,7 +282,7 @@ enum flags
 
 
 size_t http_parser_execute (http_parser *parser,
-                            http_parser_settings settings,
+                            const http_parser_settings *settings,
                             const char *data,
                             size_t len)
 {
@@ -1364,7 +1364,7 @@ size_t http_parser_execute (http_parser *parser,
       case s_body_identity:
         to_read = MIN(pe - p, (ssize_t)(parser->content_length - parser->body_read));
         if (to_read > 0) {
-          if (settings.on_body) settings.on_body(parser, p, to_read);
+          if (settings->on_body) settings->on_body(parser, p, to_read);
           p += to_read - 1;
           parser->body_read += to_read;
           if (parser->body_read == parser->content_length) {
@@ -1378,7 +1378,7 @@ size_t http_parser_execute (http_parser *parser,
       case s_body_identity_eof:
         to_read = pe - p;
         if (to_read > 0) {
-          if (settings.on_body) settings.on_body(parser, p, to_read);
+          if (settings->on_body) settings->on_body(parser, p, to_read);
           p += to_read - 1;
           parser->body_read += to_read;
         }
@@ -1451,7 +1451,7 @@ size_t http_parser_execute (http_parser *parser,
         to_read = MIN(pe - p, (ssize_t)(parser->content_length));
 
         if (to_read > 0) {
-          if (settings.on_body) settings.on_body(parser, p, to_read);
+          if (settings->on_body) settings->on_body(parser, p, to_read);
           p += to_read - 1;
         }
 
diff --git a/http_parser.h b/http_parser.h
index f367872..e1f56e2 100644
--- a/http_parser.h
+++ b/http_parser.h
@@ -149,7 +149,7 @@ void http_parser_init(http_parser *parser, enum http_parser_type type);
 
 
 size_t http_parser_execute(http_parser *parser,
-                           http_parser_settings settings,
+                           const http_parser_settings *settings,
                            const char *data,
                            size_t len);
 
diff --git a/test.c b/test.c
index 9accabd..03a98ff 100644
--- a/test.c
+++ b/test.c
@@ -898,7 +898,7 @@ inline size_t parse (const char *buf, size_t len)
 {
   size_t nparsed;
   currently_parsing_eof = (len == 0);
-  nparsed = http_parser_execute(parser, settings, buf, len);
+  nparsed = http_parser_execute(parser, &settings, buf, len);
   return nparsed;
 }
 
@@ -906,7 +906,7 @@ inline size_t parse_count_body (const char *buf, size_t len)
 {
   size_t nparsed;
   currently_parsing_eof = (len == 0);
-  nparsed = http_parser_execute(parser, settings_count_body, buf, len);
+  nparsed = http_parser_execute(parser, &settings_count_body, buf, len);
   return nparsed;
 }