diff --git a/libportal.spec b/libportal.spec
index 0b96621..cbb01ac 100644
--- a/libportal.spec
+++ b/libportal.spec
@@ -27,7 +27,7 @@ BuildRequires:	pkgconfig(gio-2.0)
 BuildRequires:	pkgconfig(gio-unix-2.0)
 BuildRequires:	pkgconfig(gobject-introspection-1.0)
 BuildRequires:	pkgconfig(gtk+-3.0)
-BuildRequires:	pkgconfig(gtk4)
+#BuildRequires:	pkgconfig(gtk4)
 #BuildRequires:	pkgconfig(Qt5Core)
 #BuildRequires:	pkgconfig(Qt5Gui)
 #BuildRequires:	pkgconfig(Qt5Widgets)
@@ -180,6 +180,8 @@ This package provides development documentations for libportal.
 /usr/libexec/python3.8 -m venv .
 . bin/activate
 
+export QTDIR=/opt/qt5/5.15
+
 %meson -Dtests=false
 %meson_build