diff --git a/lib/config/configitem.cpp b/lib/config/configitem.cpp
index 8690162f5..898ad53c1 100644
--- a/lib/config/configitem.cpp
+++ b/lib/config/configitem.cpp
@@ -150,6 +150,9 @@ DynamicObject::Ptr ConfigItem::Commit(void)
 
 	DynamicType::Ptr dtype = DynamicType::GetByName(GetType());
 
+	if (!dtype)
+		throw_exception(runtime_error("Type '" + GetType() + "' does not exist."));
+
 	if (!dobj)
 		dobj = dtype->GetObject(GetName());