diff --git a/src/eval/nnue/evaluate_nnue.cpp b/src/eval/nnue/evaluate_nnue.cpp
index d0c04958..55e627d0 100644
--- a/src/eval/nnue/evaluate_nnue.cpp
+++ b/src/eval/nnue/evaluate_nnue.cpp
@@ -23,7 +23,10 @@ AlignedPtr<FeatureTransformer> feature_transformer;
 AlignedPtr<Network> network;
 
 // Evaluation function file name
-std::string fileName = "eval\\nn.bin";
+std::string fileName = "nn.bin";
+
+// Saved evaluation function file name
+std::string savedfileName = "nn.bin";
 
 // Get a string that represents the structure of the evaluation function
 std::string GetArchitectureString() {
diff --git a/src/eval/nnue/evaluate_nnue.h b/src/eval/nnue/evaluate_nnue.h
index 97ce3df8..d474a8ae 100644
--- a/src/eval/nnue/evaluate_nnue.h
+++ b/src/eval/nnue/evaluate_nnue.h
@@ -38,6 +38,9 @@ extern AlignedPtr<Network> network;
 // Evaluation function file name
 extern std::string fileName;
 
+// Saved evaluation function file name
+extern std::string savedfileName;
+
 // Get a string that represents the structure of the evaluation function
 std::string GetArchitectureString();
 
diff --git a/src/eval/nnue/evaluate_nnue_learner.cpp b/src/eval/nnue/evaluate_nnue_learner.cpp
index 28243871..37bc79bc 100644
--- a/src/eval/nnue/evaluate_nnue_learner.cpp
+++ b/src/eval/nnue/evaluate_nnue_learner.cpp
@@ -213,7 +213,7 @@ void save_eval(std::string dir_name) {
     NNUE::SendMessages({{"clear_unobserved_feature_weights"}});
   }
 
-  const std::string file_name = NNUE::fileName;
+  const std::string file_name = Path::Combine(eval_dir, NNUE::savedfileName);
   std::ofstream stream(file_name, std::ios::binary);
   const bool result = NNUE::WriteParameters(stream);
   assert(result);