diff --git a/ext/ghoul b/ext/ghoul
index 8e787753ab..627e9a4371 160000
--- a/ext/ghoul
+++ b/ext/ghoul
@@ -1 +1 @@
-Subproject commit 8e787753ab54f60c9a74a1ded9ed9191f4b42502
+Subproject commit 627e9a4371d3b9b0159e09fe95eba194820cd5f8
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 70ac8d5d55..153a7bbdac 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -301,6 +301,10 @@ void GUI::initialize() {
 void GUI::initializeGL() {
 	_program = ghoul::opengl::ProgramObject::Build("GUI",
 		"${SHADERS}/gui_vs.glsl", "${SHADERS}/gui_fs.glsl");
+	if (!_program) {
+		LERROR("Could not load program object for GUI");
+		return;
+	}
 		
     positionLocation = glGetAttribLocation(*_program, "in_position");
     uvLocation = glGetAttribLocation(*_program, "in_uv");