diff --git a/pkgs/by-name/la/lager/package.nix b/pkgs/by-name/la/lager/package.nix
index 83144cca3bdf..d463a8bc1804 100644
--- a/pkgs/by-name/la/lager/package.nix
+++ b/pkgs/by-name/la/lager/package.nix
@@ -29,7 +29,9 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-Dlager_BUILD_EXAMPLES=OFF"
   ];
-
+  preConfigure = ''
+    rm BUILD
+  '';
   meta = {
     homepage = "https://github.com/arximboldi/lager";
     description = "C++ library for value-oriented design using the unidirectional data-flow architecture — Redux for C++";
diff --git a/pkgs/by-name/zu/zug/package.nix b/pkgs/by-name/zu/zug/package.nix
index 0c03178b3504..509545c1ffa9 100644
--- a/pkgs/by-name/zu/zug/package.nix
+++ b/pkgs/by-name/zu/zug/package.nix
@@ -24,6 +24,9 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-Dzug_BUILD_EXAMPLES=OFF"
   ];
+  preConfigure = ''
+    rm BUILD
+  '';
   meta = with lib; {
     homepage    = "https://github.com/arximboldi/zug";
     description = "library for functional interactive c++ programs";