diff --git a/core/package.yaml b/core/package.yaml
index 93fa9aa..e13ffc3 100644
--- a/core/package.yaml
+++ b/core/package.yaml
@@ -96,7 +96,6 @@ library:
   - Ohua.DFLang.Optimizations
   - Ohua.DFGraph
   - Ohua.DFGraph.Show
-  - Ohua.Constants.HostExpr
   - Ohua.Serialize.JSON
   - Ohua.Stage
   - Ohua.Util
diff --git a/core/src/Ohua/Constants/HostExpr.hs b/core/src/Ohua/Constants/HostExpr.hs
deleted file mode 100644
index ec48bfa..0000000
--- a/core/src/Ohua/Constants/HostExpr.hs
+++ /dev/null
@@ -1,25 +0,0 @@
--- |
--- Module      : $Header$
--- Description : Definition of an abstract expression language as the first IR for the Ohua compiler.
--- Copyright   : (c) Sebastian Ertel, Justus Adam 2018. All Rights Reserved.
--- License     : EPL-1.0
--- Maintainer  : sebastian.ertel@gmail.com, dev@justus.science
--- Stability   : experimental
--- Portability : portable
---
--- This module defines a set of constant values which each backend
--- must provide.
--- 
--- This source code is licensed under the terms described in the associated LICENSE.TXT file
-module Ohua.Constants.HostExpr (true, unit) where
-
-
-import Ohua.Types
-
-
-
-unit :: HostExpr
-unit = unsafeMake (-1)
-
-true :: HostExpr
-true = unsafeMake (-2)