diff --git a/pkgs/tools/system/plan9port/builder.sh b/pkgs/tools/system/plan9port/builder.sh
index 7750de700617..b5196e512f41 100644
--- a/pkgs/tools/system/plan9port/builder.sh
+++ b/pkgs/tools/system/plan9port/builder.sh
@@ -24,7 +24,6 @@ configurePhase()
           i?86-*)   echo OBJTYPE=386;;
           *power*)  echo OBJTYPE=power;;
           *sparc*)  echo OBJTYPE=sparc;;
-          *) exit 12
         esac
         if [[ $system =~ .*linux.* ]]; then
           echo SYSVERSION=2.6.x
diff --git a/pkgs/tools/system/plan9port/default.nix b/pkgs/tools/system/plan9port/default.nix
index 54e88f5d0699..8164dfa9136d 100644
--- a/pkgs/tools/system/plan9port/default.nix
+++ b/pkgs/tools/system/plan9port/default.nix
@@ -89,7 +89,7 @@ stdenv.mkDerivation {
     license = licenses.lpl-102;
     maintainers = with maintainers; [ AndersonTorres bbarker
                                       ftrvxmtrx kovirobi ];
-    platforms = remove "aarch64-linux" platforms.unix;
+    platforms = platforms.unix;
   };
 }
 # TODO: investigate the mouse chording support patch