diff --git a/scripts/mk_project.py b/scripts/mk_project.py
index 35ddde70c..d0349c0f2 100644
--- a/scripts/mk_project.py
+++ b/scripts/mk_project.py
@@ -19,7 +19,6 @@ def init_project_def():
     add_lib('simplex', ['util'], 'math/simplex')
     add_lib('hilbert', ['util'], 'math/hilbert')
     add_lib('automata', ['util'], 'math/automata')
-    add_lib('interval', ['util'], 'math/interval')
     add_lib('realclosure', ['interval'], 'math/realclosure')
     add_lib('subpaving', ['interval'], 'math/subpaving')
     add_lib('ast', ['util', 'polynomial'])