diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 08dc7db2..a979335a 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -3423,25 +3423,25 @@ static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEV
     { 19, 13, 14,  1,  7,  1, ZSTD_fast    },  /* level  1 */
     { 19, 15, 16,  1,  6,  1, ZSTD_fast    },  /* level  2 */
     { 20, 16, 17,  1,  5,  8, ZSTD_dfast   },  /* level  3 */
-    { 20, 17, 18,  1,  5,  8, ZSTD_dfast   },  /* level  4 */
-    { 20, 17, 18,  2,  5, 16, ZSTD_greedy  },  /* level  5 */
-    { 21, 17, 19,  2,  5, 16, ZSTD_lazy    },  /* level  6 */
-    { 21, 18, 19,  3,  5, 16, ZSTD_lazy    },  /* level  7 */
-    { 21, 18, 20,  3,  5, 16, ZSTD_lazy2   },  /* level  8 */
-    { 21, 19, 20,  3,  5, 16, ZSTD_lazy2   },  /* level  9 */
-    { 21, 19, 21,  4,  5, 16, ZSTD_lazy2   },  /* level 10 */
-    { 22, 20, 22,  4,  5, 16, ZSTD_lazy2   },  /* level 11 */
+    { 20, 18, 18,  1,  5,  8, ZSTD_dfast   },  /* level  4 */
+    { 20, 18, 18,  2,  5, 16, ZSTD_greedy  },  /* level  5 */
+    { 21, 18, 19,  2,  5, 16, ZSTD_lazy    },  /* level  6 */
+    { 21, 18, 19,  3,  5, 16, ZSTD_lazy2   },  /* level  7 */
+    { 21, 19, 19,  3,  5, 16, ZSTD_lazy2   },  /* level  8 */
+    { 21, 19, 20,  4,  5, 16, ZSTD_lazy2   },  /* level  9 */
+    { 21, 20, 21,  4,  5, 16, ZSTD_lazy2   },  /* level 10 */
+    { 21, 21, 22,  4,  5, 16, ZSTD_lazy2   },  /* level 11 */
     { 22, 20, 22,  5,  5, 16, ZSTD_lazy2   },  /* level 12 */
     { 22, 21, 22,  4,  5, 32, ZSTD_btlazy2 },  /* level 13 */
     { 22, 21, 22,  5,  5, 32, ZSTD_btlazy2 },  /* level 14 */
     { 22, 22, 22,  6,  5, 32, ZSTD_btlazy2 },  /* level 15 */
     { 22, 21, 22,  4,  5, 48, ZSTD_btopt   },  /* level 16 */
-    { 23, 22, 22,  4,  4, 48, ZSTD_btopt   },  /* level 17 */
-    { 23, 22, 22,  5,  3, 64, ZSTD_btopt   },  /* level 18 */
-    { 23, 23, 22,  7,  3,128, ZSTD_btopt   },  /* level 19 */
-    { 25, 25, 23,  7,  3,128, ZSTD_btultra },  /* level 20 */
-    { 26, 26, 24,  7,  3,256, ZSTD_btultra },  /* level 21 */
-    { 27, 27, 25,  9,  3,512, ZSTD_btultra },  /* level 22 */
+    { 23, 22, 22,  4,  4, 64, ZSTD_btopt   },  /* level 17 */
+    { 23, 23, 22,  6,  3,256, ZSTD_btopt   },  /* level 18 */
+    { 23, 24, 22,  7,  3,256, ZSTD_btultra },  /* level 19 */
+    { 25, 25, 23,  7,  3,256, ZSTD_btultra },  /* level 20 */
+    { 26, 26, 24,  7,  3,512, ZSTD_btultra },  /* level 21 */
+    { 27, 27, 25,  9,  3,999, ZSTD_btultra },  /* level 22 */
 },
 {   /* for srcSize <= 256 KB */
     /* W,  C,  H,  S,  L,  T, strat */