diff --git a/net-im/telegram-desktop/telegram_desktop-2.7.0.recipe b/net-im/telegram-desktop/telegram_desktop-2.7.0.recipe
index f0f78eb69..2eeb7b783 100644
--- a/net-im/telegram-desktop/telegram_desktop-2.7.0.recipe
+++ b/net-im/telegram-desktop/telegram_desktop-2.7.0.recipe
@@ -3,7 +3,7 @@ DESCRIPTION="Unofficial build of the original Telegram client for Haiku."
 HOMEPAGE="https://www.telegram.org/"
 COPYRIGHT="2013-2021 Telegram"
 LICENSE="GNU GPL v3"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://github.com/telegramdesktop/tdesktop/releases/download/v$portVersion/tdesktop-$portVersion-full.tar.gz"
 CHECKSUM_SHA256="ee50aa82e0c0515c2082a37496ffb65c7f83bd117805ee5bf9147c1777770337"
 SOURCE_FILENAME="tdesktop-$portVersion-full.tar.gz"
@@ -57,6 +57,7 @@ REQUIRES="
 
 BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
+	gcc${secondaryArchSuffix}_syslibs
 	devel:libavcodec$secondaryArchSuffix
 	devel:libavformat$secondaryArchSuffix
 	devel:libavutil$secondaryArchSuffix
@@ -100,8 +101,8 @@ BUILD_PREREQUIRES="
 
 BUILD()
 {
-	export CC=clang
-	export CXX=clang++
+	export CC=/bin/clang
+	export CXX=/bin/clang++
 	export DISABLE_ASLR=1
 
 	# get API_ID and API_HASH from Debian
@@ -126,6 +127,8 @@ BUILD()
 
 	cmake .. \
 		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_C_FLAGS="-Wno-unknown-warning-option" \
+		-DCMAKE_CXX_FLAGS="-Wno-unknown-warning-option" \
 		-DTDESKTOP_API_TEST=OFF \
 		-DTDESKTOP_DISABLE_GTK_INTEGRATION=ON \
 		-DDESKTOP_APP_DISABLE_CRASH_REPORTS=ON \
@@ -140,7 +143,7 @@ BUILD()
 		-DTDESKTOP_API_ID=$TELEGRAM_API_ID \
 		-DTDESKTOP_API_HASH=$TELEGRAM_API_HASH
 
-	make $jobArgs
+	make
 }
 
 INSTALL()