diff --git a/Sconstruct b/Sconstruct
index 620fbe44..82539f91 100644
--- a/Sconstruct
+++ b/Sconstruct
@@ -18,6 +18,7 @@ class OEnvironment(Environment):
 		self.Append(CXXCOMSTR = "C++ $TARGET")
 		self.Append(CCCOMSTR = "CC  $TARGET")
 		self.Append(LINKCOMSTR = "Linking $TARGET")
+		self.Append(ENV = { "DISPLAY" : os.environ["DISPLAY"] })
 		self.Debug = CONFIG_DEBUG
 		self.Version = CONFIG_VERSION
 
diff --git a/gui/builder.c b/gui/builder.c
new file mode 100644
index 00000000..9dc44652
--- /dev/null
+++ b/gui/builder.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <gui/builder.h>
+
+static GtkBuilder *gui_builder = NULL;
+
+void gui_builder_init(const char *file)
+{
+	gui_builder = gtk_builder_new_from_file(file);
+}
+
+void gui_builder_deinit()
+{
+	g_object_unref(G_OBJECT(gui_builder));
+	gui_builder = NULL;
+}
+
+#ifdef CONFIG_TESTING
+GtkBuilder *test_get_gui_builder()
+{
+	return gui_builder;
+}
+#endif /* CONFIG_TESTING */
diff --git a/include/gui/builder.h b/include/gui/builder.h
new file mode 100644
index 00000000..e32eda76
--- /dev/null
+++ b/include/gui/builder.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#ifndef OCARINA_GUI_BUILDER_H
+#define OCARINA_GUI_BUILDER_H
+#include <gtk/gtk.h>
+
+/* Called to initialize the GTK builder. */
+void gui_builder_init(const char *);
+
+/* Called to deinitialize the GTK builder. */
+void gui_builder_deinit();
+
+#ifdef CONFIG_TESTING
+GtkBuilder *test_get_gui_builder();
+#endif /* CONFIG_TESTING */
+#endif /* OCARINA_GUI_BUILDER_H */
diff --git a/tests/Sconscript b/tests/Sconscript
index d3cce3ea..f7e1fbd2 100644
--- a/tests/Sconscript
+++ b/tests/Sconscript
@@ -26,7 +26,7 @@ test_o = env.Object("test", "test.c")
 def UnitTest(test, sources):
 	name = os.path.basename(test)
 	make = env.Program(name, sources + [ test_o ])
-	run  = Command("%s.fake" % name, [], "tests/%s" % test)
+	run  = Command("%s.fake" % name, [], "tests/%s" % test, ENV = os.environ)
 	Depends(run, make)
 	Alias("tests/%s" % test, run)
 	return run
diff --git a/tests/gui/.gitignore b/tests/gui/.gitignore
index a01c11a4..f46d2890 100644
--- a/tests/gui/.gitignore
+++ b/tests/gui/.gitignore
@@ -1 +1,2 @@
 settings
+builder
diff --git a/tests/gui/Sconscript b/tests/gui/Sconscript
index 33714512..2c47f080 100644
--- a/tests/gui/Sconscript
+++ b/tests/gui/Sconscript
@@ -24,6 +24,7 @@ def GuiTest(name):
 
 
 res += [ GuiTest("settings") ]
+res += [ GuiTest("builder")  ]
 
 ignore.close()
 Return("res")
diff --git a/tests/gui/builder.c b/tests/gui/builder.c
new file mode 100644
index 00000000..80fca11b
--- /dev/null
+++ b/tests/gui/builder.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <gui/builder.h>
+#include <tests/test.h>
+
+static void test_builder()
+{
+	int argc = 0;
+
+	test_equal((void *)test_get_gui_builder(), NULL);
+
+	gtk_init(&argc, NULL);
+	gui_builder_init("share/ocarina/ocarina6.glade");
+	test_not_equal((void *)test_get_gui_builder(), NULL);
+
+	gui_builder_deinit();
+	test_equal((void *)test_get_gui_builder(), NULL);
+}
+
+DECLARE_UNIT_TESTS(
+	UNIT_TEST("GTK Builder", test_builder),
+);