diff --git a/internal/core/src/index/thirdparty/faiss/IndexIVF.h b/internal/core/src/index/thirdparty/faiss/IndexIVF.h
index df4a3c17e5..200613ab07 100644
--- a/internal/core/src/index/thirdparty/faiss/IndexIVF.h
+++ b/internal/core/src/index/thirdparty/faiss/IndexIVF.h
@@ -91,7 +91,7 @@ struct IndexIVFStats {
 
 struct InvertedListScanner;
 
-/** Index based on a inverted file (IVF)
+/** Index based on an inverted file (IVF)
  *
  * In the inverted file, the quantizer (an Index instance) provides a
  * quantization index for each vector to be added. The quantization