diff --git a/pkgs/development/libraries/ntdb/default.nix b/pkgs/development/libraries/ntdb/default.nix
index de0db887d4b..d0a9a2e5b49 100644
--- a/pkgs/development/libraries/ntdb/default.nix
+++ b/pkgs/development/libraries/ntdb/default.nix
@@ -1,5 +1,6 @@
 { stdenv
 , fetchurl
+, python2
 , python3
 , pkg-config
 , readline
@@ -26,6 +27,7 @@ stdenv.mkDerivation rec {
     docbook-xsl-nons
     docbook_xml_dtd_42
     wafHook
+    python2 # For wafHook
   ];
 
   buildInputs = [