diff -r 0f80a2e5e42b -r 1a9eac27698d src/main.h
--- a/src/main.h	Fri Feb 07 02:02:16 2020 +0200
+++ b/src/main.h	Fri Feb 07 23:59:06 2020 +0200
@@ -41,6 +41,14 @@
 		{
 			return this->value < other.value;
 		}
+		friend constexpr unsigned int qHash(ldraw::Id id)
+		{
+			return qHash(id.value);
+		}
+		friend bool operator==(ldraw::Id one, ldraw::Id other)
+		{
+			return one.value == other.value;
+		}
 	};
 	using id_t = Id;
 	constexpr id_t NULL_ID = id_t{0};