diff --git a/SOURCES/0001-Revert-optimization_guide-ModelExecutionSessionCallb.patch b/SOURCES/0001-Revert-optimization_guide-ModelExecutionSessionCallb.patch
new file mode 100644
index 00000000..1b27bf49
--- /dev/null
+++ b/SOURCES/0001-Revert-optimization_guide-ModelExecutionSessionCallb.patch
@@ -0,0 +1,36 @@
+From db3d8a5e5494cf8951c5aa65c39552f784238b3e Mon Sep 17 00:00:00 2001
+From: tigro <tigro@msvsphere-os.ru>
+Date: Sun, 9 Feb 2025 20:44:18 +0300
+Subject: [PATCH] Revert
+ optimization_guide::ModelExecutionSessionCallbackWithLogging callback
+
+---
+ chrome/browser/compose/compose_session.cc | 12 +++++-------
+ 1 file changed, 5 insertions(+), 7 deletions(-)
+
+diff --git a/chrome/browser/compose/compose_session.cc b/chrome/browser/compose/compose_session.cc
+index e456d8c9f2..71c75f805f 100644
+--- a/chrome/browser/compose/compose_session.cc
++++ b/chrome/browser/compose/compose_session.cc
+@@ -543,13 +543,11 @@ void ComposeSession::RequestWithSession(
+   // execution in case request fails.
+   compose::LogComposeRequestReason(request_reason);
+ 
+-  optimization_guide::ModelExecutionSessionCallbackWithLogging callback =
+-      base::BindRepeating(&ComposeSession::ModelExecutionCallback,
+-                          weak_ptr_factory_.GetWeakPtr(),
+-                          std::move(request_timer), request_id_, request_reason,
+-                          is_input_edited);
+-  optimization_guide::ExecuteModelSessionWithLogging(session_.get(), request,
+-                                                     callback);
++  session_->ExecuteModel(
++      request, base::BindRepeating(&ComposeSession::ModelExecutionCallback,
++                                   weak_ptr_factory_.GetWeakPtr(),
++                                   std::move(request_timer), request_id_,
++                                   request_reason, is_input_edited));
+ }
+ 
+ void ComposeSession::ComposeRequestTimeout(int id) {
+-- 
+2.48.1
+
diff --git a/SPECS/chromium.spec b/SPECS/chromium.spec
index 4e9ccd28..a03036f1 100644
--- a/SPECS/chromium.spec
+++ b/SPECS/chromium.spec
@@ -477,6 +477,8 @@ Patch416: flatpak-Add-initial-sandbox-support.patch
 Patch417: flatpak-Adjust-paths-for-the-sandbox.patch
 Patch418: flatpak-Expose-Widevine-into-the-sandbox.patch
 
+# Fix build on el8/el9/fedora40
+Patch599: 0001-Revert-optimization_guide-ModelExecutionSessionCallb.patch
 # Old Yandex patch
 Patch600: 0001-Yandex-as-default-search-engine.patch
 # Yandex Search by default
@@ -1283,6 +1285,11 @@ sed -i 's/std::string data_dir_basename = "chromium"/std::string data_dir_basena
 %patch -P418 -p1 -b .flatpak-widevine
 %endif
 
+%if 0%{?rhel} == 8 || 0%{?rhel} == 9 || 0%{?fedora} < 41
+%patch -P599 -p1 -b .Revert-optimization_guide-ModelExecutionSessionCallb
+%endif
+
+%patch -P601 -p1 -b .Added-Russian-description-and-summary-for-gnome-soft
 %if ! %{with gost}
 %patch -P602 -p1 -b .Yandex-as-default-search-engine
 %else