diff --git a/lib/zstd.h b/lib/zstd.h
index a88ae7bf..349d8017 100644
--- a/lib/zstd.h
+++ b/lib/zstd.h
@@ -1395,7 +1395,7 @@ ZSTDLIB_STATIC_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* o
 
 /*! ZSTD_mergeBlockDelimiters() :
  * Given an array of ZSTD_Sequence, remove all sequences that represent block delimiters/last literals
- * by merging them into into the literals of the next sequence.
+ * by merging them into the literals of the next sequence.
  *
  * As such, the final generated result has no explicit representation of block boundaries,
  * and the final last literals segment is not represented in the sequences.
@@ -1442,7 +1442,7 @@ ZSTDLIB_STATIC_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* ds
 /*! ZSTD_writeSkippableFrame() :
  * Generates a zstd skippable frame containing data given by src, and writes it to dst buffer.
  *
- * Skippable frames begin with a a 4-byte magic number. There are 16 possible choices of magic number,
+ * Skippable frames begin with a 4-byte magic number. There are 16 possible choices of magic number,
  * ranging from ZSTD_MAGIC_SKIPPABLE_START to ZSTD_MAGIC_SKIPPABLE_START+15.
  * As such, the parameter magicVariant controls the exact skippable frame magic number variant used, so
  * the magic number used will be ZSTD_MAGIC_SKIPPABLE_START + magicVariant.