diff --git a/pygit2/config.py b/pygit2/config.py
index eb626ec..4cf6360 100644
--- a/pygit2/config.py
+++ b/pygit2/config.py
@@ -250,7 +250,8 @@ class Config(object):
     @staticmethod
     def parse_bool(text):
         res = ffi.new('int *')
-        C.git_config_parse_bool(res, to_str(text))
+        err = C.git_config_parse_bool(res, to_str(text))
+        check_error(err)
 
         return res[0] != 0
 
diff --git a/pygit2/remote.py b/pygit2/remote.py
index daa1e2d..270ab6e 100644
--- a/pygit2/remote.py
+++ b/pygit2/remote.py
@@ -171,7 +171,8 @@ class Remote(object):
 
     @url.setter
     def url(self, value):
-        C.git_remote_set_url(self._remote, to_str(value))
+        err = C.git_remote_set_url(self._remote, to_str(value))
+        check_error(err)
 
     @property
     def push_url(self):
@@ -263,14 +264,16 @@ class Remote(object):
 
         Add a fetch refspec to the remote"""
 
-        C.git_remote_add_fetch(self._remote, to_str(spec))
+        err = C.git_remote_add_fetch(self._remote, to_str(spec))
+        check_error(err)
 
     def add_push(self, spec):
         """add_push(refspec)
 
         Add a push refspec to the remote"""
 
-        C.git_remote_add_push(self._remote, to_str(spec))
+        err = C.git_remote_add_push(self._remote, to_str(spec))
+        check_error(err)
 
     @ffi.callback("int (*cb)(const char *ref, const char *msg, void *data)")
     def _push_cb(ref, msg, data):