diff --git a/internal/core/src/index/thirdparty/faiss/IndexBinaryIVF.h b/internal/core/src/index/thirdparty/faiss/IndexBinaryIVF.h
index 5f654aa934..6356905eac 100644
--- a/internal/core/src/index/thirdparty/faiss/IndexBinaryIVF.h
+++ b/internal/core/src/index/thirdparty/faiss/IndexBinaryIVF.h
@@ -24,7 +24,7 @@ namespace faiss {
 
 struct BinaryInvertedListScanner;
 
-/** Index based on a inverted file (IVF)
+/** Index based on an inverted file (IVF)
  *
  * In the inverted file, the quantizer (an IndexBinary instance) provides a
  * quantization index for each vector to be added. The quantization