diff --git a/AUTHORS b/AUTHORS
index 1fb91adaf..0429f9f0a 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -183,6 +183,7 @@ Nathan Rugg (nmrugg)
 Nguyen Pham (nguyenpham)
 Nicklas Persson (NicklasPersson)
 Nick Pelling (nickpelling)
+Nicolas Duhamel (nikloskoda)
 Niklas Fiekas (niklasf)
 Nikolay Kostov (NikolayIT)
 Norman Schmidt (FireFather)
diff --git a/src/search.cpp b/src/search.cpp
index 0684ea5cb..04c04b5be 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -381,7 +381,8 @@ void Search::Worker::iterative_deepening() {
                 }
                 else if (bestValue >= beta)
                 {
-                    beta = std::min(bestValue + delta, VALUE_INFINITE);
+                    alpha = std::max(beta - delta, alpha);
+                    beta  = std::min(bestValue + delta, VALUE_INFINITE);
                     ++failedHighCnt;
                 }
                 else