diff --git a/pkgs/build-support/release/default.nix b/pkgs/build-support/release/default.nix
index e3ea97876f46..65813ef9cabb 100644
--- a/pkgs/build-support/release/default.nix
+++ b/pkgs/build-support/release/default.nix
@@ -5,8 +5,7 @@ with pkgs;
 rec {
 
   makeSourceTarball = args: import ./make-source-tarball.nix (
-    { inherit autoconf automake libtool;
-      stdenv = stdenvNew;
+    { inherit stdenv autoconf automake libtool;
     } // args);
 
   nixBuild = args: import ./nix-build.nix (
diff --git a/pkgs/development/interpreters/octave/hg.nix b/pkgs/development/interpreters/octave/hg.nix
index 037a2ab66b01..43d4358d11c0 100644
--- a/pkgs/development/interpreters/octave/hg.nix
+++ b/pkgs/development/interpreters/octave/hg.nix
@@ -2,7 +2,7 @@
  bison, autoconf, automake, sourceByName, getConfig, lib, atlas, gperf, python, glibc, gnuplot, texinfo, texLive}:
 
 assert readline != null && ncurses != null && flex != null;
-assert g77.langF77;
+assert g77.langFortran;
 
 let commonBuildInputs = [g77 readline ncurses perl glibc]; in