diff --git a/README.md b/README.md
index 4cd5968e..ca90d5d4 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ change them via a chess GUI. This is a list of available UCI options in Stockfis
 
   * #### UCI_Elo
     If enabled by UCI_LimitStrength, aim for an engine strength of the given Elo.
-    This Elo rating has been calibrated at a time control of 60s+0.6s and anchored to CCRL 40/4.
+    This Elo rating has been calibrated at a time control of 120s+1.0s and anchored to +- 100 Elo to CCRL Blitz.
 
   * #### Skill Level
     Lower the Skill Level in order to make Stockfish play weaker (see also UCI_LimitStrength).
diff --git a/src/search.cpp b/src/search.cpp
index f5eeb23b..346fd6c3 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -96,7 +96,10 @@ namespace {
   struct Skill {
     Skill(int skill_level, int uci_elo) {
         if (uci_elo)
-            level = std::clamp(std::pow((uci_elo - 1346.6) / 143.4, 1 / 0.806), 0.0, 20.0);
+        {
+            double e = double(uci_elo - 1320) / (3190 - 1320);
+            level = std::clamp((((37.2473 * e - 40.8525) * e + 22.2943) * e - 0.311438), 0.0, 19.0);
+        }
         else
             level = double(skill_level);
     }
diff --git a/src/ucioption.cpp b/src/ucioption.cpp
index b4ce70b4..39933ea5 100644
--- a/src/ucioption.cpp
+++ b/src/ucioption.cpp
@@ -73,7 +73,7 @@ void init(OptionsMap& o) {
   o["UCI_Chess960"]          << Option(false);
   o["UCI_AnalyseMode"]       << Option(false);
   o["UCI_LimitStrength"]     << Option(false);
-  o["UCI_Elo"]               << Option(1350, 1350, 2850);
+  o["UCI_Elo"]               << Option(1320, 1320, 3190);
   o["UCI_ShowWDL"]           << Option(false);
   o["SyzygyPath"]            << Option("<empty>", on_tb_path);
   o["SyzygyProbeDepth"]      << Option(1, 1, 100);