diff --git a/doc/languages-frameworks/python.md b/doc/languages-frameworks/python.md
index 89659c2166b1..36611394242a 100644
--- a/doc/languages-frameworks/python.md
+++ b/doc/languages-frameworks/python.md
@@ -291,8 +291,8 @@ pyfftw = buildPythonPackage rec {
   # Tests cannot import pyfftw. pyfftw works fine though.
   doCheck = false;
 
-  LDFLAGS="-L${pkgs.fftw}/lib -L${pkgs.fftwFloat}/lib -L${pkgs.fftwLongDouble}/lib"
-  CFLAGS="-I${pkgs.fftw}/include -I${pkgs.fftwFloat}/include -I${pkgs.fftwLongDouble}/include"
+  LDFLAGS="-L${pkgs.fftw.dev}/lib -L${pkgs.fftwFloat.out}/lib -L${pkgs.fftwLongDouble.out}/lib"
+  CFLAGS="-I${pkgs.fftw.dev}/include -I${pkgs.fftwFloat.dev}/include -I${pkgs.fftwLongDouble.dev}/include"
   '';
 
   meta = {