diff --git a/repos/extra-x86_64/PKGBUILD b/repos/extra-x86_64/PKGBUILD
index 0b5c660..ed367f3 100644
--- a/repos/extra-x86_64/PKGBUILD
+++ b/repos/extra-x86_64/PKGBUILD
@@ -36,6 +36,12 @@ source=(https://github.com/transmission/transmission/releases/download/$pkgver/t
 sha256sums=('8fc5aef23638c983406f6a3ee9918369e4cdc84e3228bd2fb3d01dd55cdad900'
             '641310fb0590d40e00bea1b5b9c843953ab78edf019109f276be9c6a7bdaf5b2'
             '1266032bb07e47d6bcdc7dabd74df2557cc466c33bf983a5881316a4cc098451')
+
+prepare() {
+  cd $pkgbase-$pkgver
+  sed -i 's/GTKMM_DISABLE_DEPRECATED/# GDKMM_DISABLE_DEPRECATED/' gtk/CMakeLists.txt
+}
+
 build() {
   export CFLAGS+=" -ffat-lto-objects"
   cd $pkgbase-$pkgver