diff --git a/binding/http-binding.cpp b/binding/http-binding.cpp
index d6add6ed..1b6eb064 100644
--- a/binding/http-binding.cpp
+++ b/binding/http-binding.cpp
@@ -56,7 +56,7 @@ RB_METHOD(httpGet) {
         auto res = req.get();
         ret = rb_hash_new();
         rb_hash_aset(ret, ID2SYM(rb_intern("status")), INT2NUM(res.status()));
-        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new_cstr(res.body().c_str()));
+        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new(res.body().c_str(), res.body().length()));
         rb_hash_aset(ret, ID2SYM(rb_intern("headers")), stringMap2hash(res.headers()));
     } catch (Exception &e) {
         raiseRbExc(e);
@@ -85,7 +85,7 @@ RB_METHOD(httpPost) {
         auto res = req.post(postData);
         ret = rb_hash_new();
         rb_hash_aset(ret, ID2SYM(rb_intern("status")), INT2NUM(res.status()));
-        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new_cstr(res.body().c_str()));
+        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new(res.body().c_str(), res.body().length()));
         rb_hash_aset(ret, ID2SYM(rb_intern("headers")), stringMap2hash(res.headers()));
     } catch (Exception &e) {
         raiseRbExc(e);
@@ -114,7 +114,7 @@ RB_METHOD(httpPostBody) {
         auto res = req.post(RSTRING_PTR(body), RSTRING_PTR(ctype));
         ret = rb_hash_new();
         rb_hash_aset(ret, ID2SYM(rb_intern("status")), INT2NUM(res.status()));
-        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new_cstr(res.body().c_str()));
+        rb_hash_aset(ret, ID2SYM(rb_intern("body")), rb_utf8_str_new(res.body().c_str(), res.body().length()));
         rb_hash_aset(ret, ID2SYM(rb_intern("headers")), stringMap2hash(res.headers()));
     } catch (Exception &e) {
         raiseRbExc(e);