diff --git a/lib/compress/zstdmt_compress.c b/lib/compress/zstdmt_compress.c
index d68f4718..0d384c61 100644
--- a/lib/compress/zstdmt_compress.c
+++ b/lib/compress/zstdmt_compress.c
@@ -1192,8 +1192,8 @@ static unsigned ZSTDMT_computeTargetJobLog(const ZSTD_CCtx_params* params)
     if (params->ldmParams.enableLdm) {
         /* In Long Range Mode, the windowLog is typically oversized.
          * In which case, it's preferable to determine the jobSize
-         * based on chainLog instead. */
-        jobLog = MAX(21, params->cParams.chainLog + 4);
+         * based on cycleLog instead. */
+        jobLog = MAX(21, ZSTD_cycleLog(params->cParams.chainLog, params->cParams.strategy) + 3);
     } else {
         jobLog = MAX(20, params->cParams.windowLog + 2);
     }
diff --git a/programs/fileio.c b/programs/fileio.c
index e02c3f83..66636c50 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -909,7 +909,7 @@ static void FIO_adjustParamsForPatchFromMode(FIO_prefs_t* const prefs,
     if (fileWindowLog > ZSTD_WINDOWLOG_MAX)
         DISPLAYLEVEL(1, "Max window log exceeded by file (compression ratio will suffer)\n");
     comprParams->windowLog = MIN(ZSTD_WINDOWLOG_MAX, fileWindowLog);
-    if (fileWindowLog > ZSTD_cycleLog(cParams.hashLog, cParams.strategy)) {
+    if (fileWindowLog > ZSTD_cycleLog(cParams.chainLog, cParams.strategy)) {
         if (!prefs->ldmFlag)
             DISPLAYLEVEL(1, "long mode automatically triggered\n");
         FIO_setLdmFlag(prefs, 1);