diff --git a/ext/tox/extconf.rb b/ext/tox/extconf.rb
index 0b258bf..cc27b8c 100755
--- a/ext/tox/extconf.rb
+++ b/ext/tox/extconf.rb
@@ -13,5 +13,6 @@ have_library LIBTOXCORE, 'tox_get_savedata' and
 have_library LIBTOXCORE, 'tox_self_get_address' and
 have_library LIBTOXCORE, 'tox_bootstrap' and
 have_library LIBTOXCORE, 'tox_kill' and
+have_library LIBTOXCORE, 'tox_version_is_compatible' and
 
 create_makefile "#{NAME}/#{NAME}" or exit(1)
diff --git a/ext/tox/tox.c b/ext/tox/tox.c
index abbd382..22de2ea 100644
--- a/ext/tox/tox.c
+++ b/ext/tox/tox.c
@@ -45,6 +45,9 @@ static VALUE cTox_cOptions_data_EQUALS(VALUE self, VALUE data);
 
 void Init_tox()
 {
+  if (!TOX_VERSION_IS_ABI_COMPATIBLE())
+    rb_raise(rb_eLoadError, "incompatible Tox ABI version");
+
   cTox = rb_define_class("Tox", rb_cObject);
   rb_define_alloc_func(cTox, cTox_alloc);
   rb_define_method(cTox, "initialize_with", cTox_initialize_with, 1);