diff --git a/lib/platforms.nix b/lib/platforms.nix
index 8be37d7ed1e7..76df389deacd 100644
--- a/lib/platforms.nix
+++ b/lib/platforms.nix
@@ -2,9 +2,9 @@ let lists = import ./lists.nix; in
 
 rec {
   gnu = linux; /* ++ hurd ++ kfreebsd ++ ... */
-  linux = ["i686-linux" "x86_64-linux" "powerpc-linux" "armv5tel-linux" "armv7l-linux" "mips64el-linux"];
+  linux = ["i686-linux" "x86_64-linux" "armv5tel-linux" "armv7l-linux" "mips64el-linux"];
   darwin = ["x86_64-darwin"];
-  freebsd = ["i686-freebsd" "x86_64-freebsd" "powerpc-freebsd"];
+  freebsd = ["i686-freebsd" "x86_64-freebsd"];
   openbsd = ["i686-openbsd" "x86_64-openbsd"];
   netbsd = ["i686-netbsd" "x86_64-netbsd"];
   cygwin = ["i686-cygwin"];