diff --git a/externals/install-dotnet.sh b/externals/install-dotnet.sh
index caa3ea450..38a160cf1 100755
--- a/externals/install-dotnet.sh
+++ b/externals/install-dotnet.sh
@@ -331,6 +331,10 @@ get_machine_architecture() {
             echo "riscv64"
             return 0
             ;;
+        powerpc|ppc)
+            echo "ppc"
+            return 0
+            ;;
         esac
     fi