diff --git a/README.md b/README.md
index 7d2294f..9a1cbe9 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ python3 -m karaokatalog.organize $SONG_LIBRARY
 
 **Re-encode all txt files into UTF-8.** This will use normal UTF-8, i.e., UTF-8 without BOM. If the txt uses UTF-8 with BOM, BOM is removed.
 
-⚠️ This will _irreversible_ change the encoding of the txt files (based on a guessed encoding).
+⚠️ This will _irreversibly_ change the encoding of the txt files (based on a guessed encoding).
 
 ℹ️ Deduplication is risk-reduced: We only change the encoding if we are reasonably certain our guessed encoding is correct. However, we could still make mistakes when detecting.