diff --git a/pkgs/desktops/plasma-5/khotkeys.nix b/pkgs/desktops/plasma-5/khotkeys.nix
index c54d5486ee96..77f1002c08aa 100644
--- a/pkgs/desktops/plasma-5/khotkeys.nix
+++ b/pkgs/desktops/plasma-5/khotkeys.nix
@@ -13,5 +13,5 @@ mkDerivation {
     plasma-framework plasma-workspace qtx11extras
   ];
   outputs = [ "out" "dev" "bin" ];
-  enableParallelBuild = false;
+  enableParallelBuilding = false;
 }
diff --git a/pkgs/development/libraries/qt-5/5.9/qtlocation.nix b/pkgs/development/libraries/qt-5/5.9/qtlocation.nix
index 24f0b648723e..6270bc577cf0 100644
--- a/pkgs/development/libraries/qt-5/5.9/qtlocation.nix
+++ b/pkgs/development/libraries/qt-5/5.9/qtlocation.nix
@@ -9,5 +9,5 @@ qtSubmodule {
     moveToOutput "$qtQmlPrefix" "$bin"
   '';
   # Linking with -lclipper fails with parallel build enabled
-  enableParallelBuild = false;
+  enableParallelBuilding = false;
 }