diff --git a/rust.spec b/rust.spec
index 66a5a9c..6ba2790 100644
--- a/rust.spec
+++ b/rust.spec
@@ -42,28 +42,23 @@ Provides:       rustc-stable = %{version}
 Conflicts:      rustc-bootstrap
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-ExclusiveArch:  %{ix86} x86_64 %{arm} aarch64
+ExclusiveArch:  %{ix86} x86_64 %{arm} aarch64 ppc64 ppc64le
 %if 0%{?suse_version}
 BuildRequires:  fdupes
 %endif
-%ifarch %{arm}
+%ifnarch %{ix86} x86_64
 BuildRequires:  rustc-bootstrap <= %{prev_version}
 BuildRequires:  rustc-bootstrap >= %{prev_version}
     %else
-    %ifarch aarch64
+    %if %{with bootstrap}
 BuildRequires:  rustc-bootstrap <= %{prev_version}
 BuildRequires:  rustc-bootstrap >= %{prev_version}
         %else
-        %if %{with bootstrap}
-BuildRequires:  rustc-bootstrap <= %{prev_version}
-BuildRequires:  rustc-bootstrap >= %{prev_version}
-            %else
-            %if %{without bootstrap}
+        %if %{without bootstrap}
 BuildRequires:  rust <= %{version}
 BuildRequires:  rust >= %{prev_version}
-            %endif
         %endif
-   %endif
+    %endif
 %endif
 
 %description