diff --git a/dotnet3.1.spec b/dotnet3.1.spec
index ecf163d..380af28 100644
--- a/dotnet3.1.spec
+++ b/dotnet3.1.spec
@@ -139,6 +139,7 @@ BuildRequires:  systemtap-sdt-devel
 BuildRequires:  tar
 BuildRequires:  zlib-devel
 BuildRequires:  which
+ExcludeArch:    %{armx}
 
 %description
 .NET Core is a fast, lightweight and modular platform for creating