diff --git a/pkgs/development/libraries/intel-media-sdk/default.nix b/pkgs/development/libraries/intel-media-sdk/default.nix
index 03b3b936f26..a49320fef49 100644
--- a/pkgs/development/libraries/intel-media-sdk/default.nix
+++ b/pkgs/development/libraries/intel-media-sdk/default.nix
@@ -23,7 +23,6 @@ stdenv.mkDerivation rec {
   ];
 
   doCheck = true;
-  enableParallelBuild = true;
 
   meta = with stdenv.lib; {
     description = "Intel Media SDK.";
diff --git a/pkgs/tools/X11/alttab/default.nix b/pkgs/tools/X11/alttab/default.nix
index 28c8efffa2a..d77f2f1c71b 100644
--- a/pkgs/tools/X11/alttab/default.nix
+++ b/pkgs/tools/X11/alttab/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
     xorg.libXrender
   ];
 
-  enableParallelBuild = true;
+  enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
     homepage = "https://github.com/sagb/alttab";