diff --git a/mailimporter.spec b/mailimporter.spec
index 447003f..444cab1 100644
--- a/mailimporter.spec
+++ b/mailimporter.spec
@@ -24,6 +24,8 @@ License:        GPL-2.0
 Group:          Development/Libraries/C and C++
 Url:            http://www.kde.org
 Source0:        %{name}-%{version}.tar.xz
+# It can only build on the same platforms as Qt Webengine
+ExclusiveArch:  %ix86 x86_64 %arm aarch64 mips mips64
 BuildRequires:  akonadi-mime-devel = %{version}
 BuildRequires:  akonadi-server-devel
 BuildRequires:  extra-cmake-modules