diff --git a/pkgs/applications/audio/streamripper/default.nix b/pkgs/applications/audio/streamripper/default.nix
index 2df1e1e3b3b5..47d9381b2def 100644
--- a/pkgs/applications/audio/streamripper/default.nix
+++ b/pkgs/applications/audio/streamripper/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     homepage = http://streamripper.sourceforge.net/;
     description = "Application that lets you record streaming mp3 to your hard drive";
     license = licenses.gpl2;
-    platforms = platforms.unix;
+    platforms = platforms.linux;
     maintainers = with maintainers; [ the-kenny ];
   };
 }
diff --git a/pkgs/development/interpreters/racket/default.nix b/pkgs/development/interpreters/racket/default.nix
index fbb07468e5cb..1a9475df2846 100644
--- a/pkgs/development/interpreters/racket/default.nix
+++ b/pkgs/development/interpreters/racket/default.nix
@@ -82,6 +82,6 @@ stdenv.mkDerivation rec {
     homepage = http://racket-lang.org/;
     license = licenses.lgpl3;
     maintainers = with maintainers; [ kkallio henrytill vrthra ];
-    platforms = platforms.x86_64;
+    platforms = [ "x86_64-linux" ];
   };
 }
diff --git a/pkgs/development/tools/analysis/radare/default.nix b/pkgs/development/tools/analysis/radare/default.nix
index 6b7ba2a81cb2..7ca0291fad98 100644
--- a/pkgs/development/tools/analysis/radare/default.nix
+++ b/pkgs/development/tools/analysis/radare/default.nix
@@ -32,6 +32,6 @@ stdenv.mkDerivation rec {
     homepage = http://radare.org/;
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
-    platforms = with stdenv.lib.platforms; all;
+    platforms = with stdenv.lib.platforms; linux;
   };
 }
diff --git a/pkgs/games/stockfish/default.nix b/pkgs/games/stockfish/default.nix
index 629d7b1ea82f..14b9b424345d 100644
--- a/pkgs/games/stockfish/default.nix
+++ b/pkgs/games/stockfish/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
       much stronger than the best human chess grandmasters.
       '';
     maintainers = with maintainers; [ luispedro peti ];
-    platforms = with platforms; i686 ++ x86_64;
+    platforms = ["x86_64-linux" "i686-linux"];
     license = licenses.gpl2;
   };