diff --git a/qwt.spec b/qwt.spec
index 03631db..37f0550 100644
--- a/qwt.spec
+++ b/qwt.spec
@@ -29,8 +29,10 @@ Patch52: qwt-qt5.patch
 %if 0%{?qt5}
 BuildRequires: pkgconfig(Qt5Concurrent) pkgconfig(Qt5PrintSupport) pkgconfig(Qt5Widgets)
 BuildRequires: pkgconfig(Qt5OpenGL) pkgconfig(Qt5Svg)
+BuildRequires: pkgconfig(Qt5Designer)
 %endif
 BuildRequires: pkgconfig(QtGui) pkgconfig(QtSvg)
+BuildRequires: pkgconfig(QtDesigner)
 # silly buildsys quirk
 BuildConflicts: qwt-devel
 %{?_qt4_version:Requires: qt4%{?_isa} >= %{_qt4_version}}