diff --git a/tests/vault/gear/test-chain-load.hpp b/tests/vault/gear/test-chain-load.hpp
index ddae88241..46d2b8f89 100644
--- a/tests/vault/gear/test-chain-load.hpp
+++ b/tests/vault/gear/test-chain-load.hpp
@@ -1964,7 +1964,9 @@ namespace test {
ENSURE (0.0 < stat.avgConcurrency);
if (not concurrency)
concurrency = defaultConcurrency();
- double formFac = concurrency / stat.avgConcurrency;
+ double worktimeRatio = 1 - stat.timeAtConc(0) / stat.coveredTime;
+ double workConcurrency = stat.avgConcurrency / worktimeRatio;
+ double formFac = concurrency / workConcurrency;
double expectedNodeTime = _uSec(compuLoad_->timeBase) * chainLoad_.getWeightSum() / chainLoad_.size();
double realAvgNodeTime = stat.activeTime / stat.activationCnt;
formFac *= realAvgNodeTime / expectedNodeTime;
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 044a5dbd2..ee34531f1 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -111473,8 +111473,8 @@ Date: Thu Apr 20 18:53:17 2023 +0200
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