diff --git a/kgpg.spec b/kgpg.spec
index 49f13c3..7d2651a 100644
--- a/kgpg.spec
+++ b/kgpg.spec
@@ -40,6 +40,9 @@ BuildRequires: cmake(KF5XmlGui)
 BuildRequires: cmake(KF5WidgetsAddons)
 BuildRequires: cmake(KF5WindowSystem)
 
+# pim-related deps below are available only where qtwebengine is
+%{?qt5_qtwebengine_arches:ExclusiveArch: %{qt5_qtwebengine_arches}}
+
 BuildRequires: cmake(KF5AkonadiContact)
 BuildRequires: cmake(KF5Contacts)