diff --git a/pkgs/applications/graphics/openscad/default.nix b/pkgs/applications/graphics/openscad/default.nix
index 9910b7bbadf..9f7fbc8421b 100644
--- a/pkgs/applications/graphics/openscad/default.nix
+++ b/pkgs/applications/graphics/openscad/default.nix
@@ -53,10 +53,6 @@ mkDerivation rec {
   # src/lexer.l:36:10: fatal error: parser.hxx: No such file or directory
   enableParallelBuilding = false; # true by default due to qmake
 
-  preBuild = ''
-    sed -re 's/qscintilla2_qt5/qscintilla2/g' -i Makefile
-  '';
-
   postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
     mkdir $out/Applications
     mv $out/bin/*.app $out/Applications