diff --git a/nix-meson-build-support/default-system-cpu/meson.build b/nix-meson-build-support/default-system-cpu/meson.build
index fd447aa01..2221265f0 100644
--- a/nix-meson-build-support/default-system-cpu/meson.build
+++ b/nix-meson-build-support/default-system-cpu/meson.build
@@ -1,9 +1,10 @@
-nix_system_cpu = {
-  'ppc64' : 'powerpc64',
-  'ppc64le' : 'powerpc64le',
-  'ppc' : 'powerpc',
-  'ppcle' : 'powerpcle',
-}.get(
+powerpc_system_cpus = [ 'ppc64', 'ppc' ]
+
+nix_system_cpu = {'ppc64' : 'powerpc64', 'ppc' : 'powerpc'}.get(
   host_machine.cpu_family(),
   host_machine.cpu_family(),
 )
+
+if powerpc_system_cpus.contains(host_machine.cpu_family()) and host_machine.endian() == 'little'
+  nix_system_cpu += 'le'
+endif