diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 31983d3695ca..39ec95d8e53c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12806,6 +12806,7 @@ in
     inherit (gnome2) libIDL;
     libpng = libpng_apng;
     enableGTK3 = false;
+    python = python2;
   }) firefox-unwrapped firefox-esr-unwrapped;
 
   firefox = wrapFirefox firefox-unwrapped { };