diff --git a/flake.nix b/flake.nix
index 5a510ed..97b6689 100644
--- a/flake.nix
+++ b/flake.nix
@@ -48,10 +48,10 @@
             name = "SFMLtest";
             src = self;
             buildInputs = cppDependencies;
-            buildPhase = "c++ -std=c++17 -o ${binName} ${./src/main.cpp} -lPocoFoundation -lboost_system";
+            buildPhase = "make -j $NIX_BUILD_CORES";
             installPhase = ''
               mkdir -p $out/bin
-              cp ${binName} $out/bin/
+              mv $TMP/source/bin/${binName} $out/bin
             '';
           };
       });