diff --git a/src/nplinker/metabolomics/spectrum.py b/src/nplinker/metabolomics/spectrum.py
index af4a401c..db9b4c3f 100644
--- a/src/nplinker/metabolomics/spectrum.py
+++ b/src/nplinker/metabolomics/spectrum.py
@@ -138,7 +138,7 @@ def to_tabular(self) -> dict[str, str]:
         """Convert the Spectrum object to a tabular format.
 
         Returns:
-            dict: A dictionary representing the BGC object in tabular format.
+            dict: A dictionary representing the Spectrum object in tabular format.
                 The keys can be treated as headers and values are strings in which tabs are removed.
                 This dict can be exported as a TSV file.
         """