diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,9 @@
 from distutils.core import setup, Extension
+import numpy
 
 module1 = Extension("pymuvr",
-                    sources = ["pymuvr/Van_Rossum_Multiunit.cpp", "pymuvr/pymuvr.cpp"])
+                    sources = ["pymuvr/Van_Rossum_Multiunit.cpp", "pymuvr/pymuvr.cpp"],
+                    include_dirs = [numpy.get_include()])
 
 setup (name = "pymuvr",
        version = "1.0",
Fix importing numpy headers from nonstandard locations.