diff --git a/Telegram/CMakeLists.txt b/Telegram/CMakeLists.txt
index 1613253ad..7dad8ebb2 100644
--- a/Telegram/CMakeLists.txt
+++ b/Telegram/CMakeLists.txt
@@ -126,7 +126,7 @@ if (LINUX)
             endif()
         else()
             pkg_check_modules(GTK REQUIRED gtk+-3.0)
-            target_include_directories(Telegram PRIVATE ${GTK_INCLUDE_DIRS})
+            target_include_directories(Telegram SYSTEM PRIVATE ${GTK_INCLUDE_DIRS})
 
             if (NOT DESKTOP_APP_DISABLE_X11_INTEGRATION)
                 target_link_libraries(Telegram PRIVATE X11)
diff --git a/Telegram/cmake/lib_tgvoip.cmake b/Telegram/cmake/lib_tgvoip.cmake
index 6c97e3c7f..f7007c4e4 100644
--- a/Telegram/cmake/lib_tgvoip.cmake
+++ b/Telegram/cmake/lib_tgvoip.cmake
@@ -191,7 +191,7 @@ if (NOT TGVOIP_FOUND)
     if (LINUX)
         if (NOT LIBTGVOIP_DISABLE_ALSA)
             find_package(ALSA REQUIRED)
-            target_include_directories(lib_tgvoip_bundled PRIVATE ${ALSA_INCLUDE_DIRS})
+            target_include_directories(lib_tgvoip_bundled SYSTEM PRIVATE ${ALSA_INCLUDE_DIRS})
         else()
             remove_target_sources(lib_tgvoip_bundled ${tgvoip_loc}
                 os/linux/AudioInputALSA.cpp
@@ -206,7 +206,7 @@ if (NOT TGVOIP_FOUND)
         if (NOT LIBTGVOIP_DISABLE_PULSEAUDIO)
             find_package(PkgConfig REQUIRED)
             pkg_check_modules(PULSE REQUIRED libpulse)
-            target_include_directories(lib_tgvoip_bundled PRIVATE ${PULSE_INCLUDE_DIRS})
+            target_include_directories(lib_tgvoip_bundled SYSTEM PRIVATE ${PULSE_INCLUDE_DIRS})
         else()
             remove_target_sources(lib_tgvoip_bundled ${tgvoip_loc}
                 os/linux/AudioOutputPulse.cpp