diff --git a/flake.nix b/flake.nix
index 2718f346b..c04774db0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -118,8 +118,8 @@
                   -DCMAKE_SHARED_LINKER_FLAGS="-fuse-ld=mold" \
                   -G "Ninja Multi-Config" -B build
                 cmake --build build --config Release
-                build/ml_kem_test
-                build/sha3_test
+                build/Release/ml_kem_test
+                build/Release/sha3_test
                 rm -rf build/_deps
               '';
               checkPhase = ''