diff --git a/programs/fileio.c b/programs/fileio.c
index 4e4adbdbb..004d71aa7 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -557,9 +557,6 @@ static cRess_t FIO_createCResources(const char* dictFileName, int cLevel,
         DISPLAYLEVEL(5,"set nb workers = %u \n", g_nbWorkers);
         CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_nbWorkers, g_nbWorkers) );
         CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_jobSize, g_blockSize) );
-        if ( (g_overlapLog == FIO_OVERLAP_LOG_NOTSET)
-          && (cLevel == ZSTD_maxCLevel()) )
-            g_overlapLog = 9;   /* full overlap */
         if (g_overlapLog != FIO_OVERLAP_LOG_NOTSET) {
             DISPLAYLEVEL(3,"set overlapLog = %u \n", g_overlapLog);
             CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_c_overlapLog, g_overlapLog) );