diff --git a/pkgs/development/python-modules/numpy/1.nix b/pkgs/development/python-modules/numpy/1.nix
index f20bd095cf97..ade66d14b829 100644
--- a/pkgs/development/python-modules/numpy/1.nix
+++ b/pkgs/development/python-modules/numpy/1.nix
@@ -3,6 +3,7 @@
   stdenv,
   fetchPypi,
   python,
+  numpy_1,
   pythonAtLeast,
   pythonOlder,
   buildPythonPackage,
@@ -185,6 +186,7 @@ buildPythonPackage rec {
     blas = blas.provider;
     blasImplementation = blas.implementation;
     inherit cfg;
+    coreIncludeDir = "${numpy_1}/${python.sitePackages}/numpy/core/include";
     tests = {
       inherit sage;
     };