diff --git a/README.md b/README.md
index adb5421..b74d592 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,9 @@ A PyTorch-based implementation of a source-independent full waveform inversion (
 GPR-SIDL-inv/
 │
 ├── dataset/                   # Training/testing data and synthetic datasets
+
 ├── field_data/                 # Network architectures
+
 ├── gprMax/                  # Data processing, waveform simulation, etc.
 ├── IMG/                # Training script
 ├── impulse/                 # Inversion / prediction script