diff --git a/Build.PL b/Build.PL
index f581089..f35bfb5 100644
--- a/Build.PL
+++ b/Build.PL
@@ -7,6 +7,7 @@ my $build = Module::Build::WithXSpp->new(
   license         => 'perl',
   requires        => {
   },
+  test_requires => { 'Test::More' => 0, 'Test::Exception' => 0, },
   # Provides useful extra C typemaps for opaque objects:
   extra_typemap_modules => {
     'ExtUtils::Typemaps::ObjectMap'  => '0.01',
diff --git a/src/myconversions.h b/src/myconversions.h
index 2ca5ebc..38dea98 100644
--- a/src/myconversions.h
+++ b/src/myconversions.h
@@ -4,6 +4,7 @@
 #include <compact_lang_det.h>
 #include <EXTERN.h>
 #include <perl.h>
+#include <XSUB.h>
 #include <vector>