diff --git a/tdesktop/cmake/external/gsl/CMakeLists.txt b/tdesktop/cmake/external/gsl/CMakeLists.txt
index 8eaf19c54..344f9488b 100644
--- a/tdesktop/cmake/external/gsl/CMakeLists.txt
+++ b/tdesktop/cmake/external/gsl/CMakeLists.txt
@@ -7,7 +7,6 @@
 add_library(external_gsl INTERFACE IMPORTED GLOBAL)
 add_library(desktop-app::external_gsl ALIAS external_gsl)
 
-#[[
 if (DESKTOP_APP_USE_PACKAGED)
     if (DESKTOP_APP_USE_PACKAGED_LAZY)
         find_package(Microsoft.GSL 4.0.0 QUIET)
@@ -20,7 +19,6 @@ if (DESKTOP_APP_USE_PACKAGED)
         return()
     endif()
 endif()
-]]
 
 # https://gitlab.kitware.com/cmake/cmake/-/issues/25222
 if (NOT EXISTS ${third_party_loc}/GSL/include)
diff --git a/telegram-desktop.spec b/telegram-desktop.spec
index d42f76c0b..74fa084e3 100644
--- a/telegram-desktop.spec
+++ b/telegram-desktop.spec
@@ -18,7 +18,7 @@
 %def_without wayland
 %def_with x11
 %def_with rlottie
-%def_without gsl
+%def_with gsl
 %def_without ninja
 %def_without ffmpeg_static
 %def_without jemalloc