diff --git a/lib/compress/zstd_opt.c b/lib/compress/zstd_opt.c
index eb8647062..04587e855 100644
--- a/lib/compress/zstd_opt.c
+++ b/lib/compress/zstd_opt.c
@@ -1512,7 +1512,6 @@ size_t ZSTD_compressBlock_btultra2(
      * The compression ratio gain is generally small (~0.5% on first block),
      * the cost is 2x cpu time on first block. */
     assert(srcSize <= ZSTD_BLOCKSIZE_MAX);
-    //g_debuglevel = -g_debuglevel;
     if ( (ms->opt.litLengthSum==0)   /* first block */
       && (seqStore->sequences == seqStore->sequencesStart)  /* no ldm */
       && (ms->window.dictLimit == ms->window.lowLimit)   /* no dictionary */
@@ -1522,7 +1521,6 @@ size_t ZSTD_compressBlock_btultra2(
         ZSTD_initStats_ultra(ms, seqStore, rep, src, srcSize);
     }
 
-    //g_debuglevel = -g_debuglevel;
     return ZSTD_compressBlock_opt2(ms, seqStore, rep, src, srcSize, ZSTD_noDict);
 }
 #endif