diff --git a/tools/spectra_generator.py b/tools/spectra_generator.py
index a6529c870..cea3f8550 100644
--- a/tools/spectra_generator.py
+++ b/tools/spectra_generator.py
@@ -34,4 +34,5 @@ def double_peak(fname: str) -> None:
 
 
 if __name__ == "__main__":
+    """Start Generator."""
     double_peak("double_peak.csv")