diff --git a/pkgs/tools/security/john/default.nix b/pkgs/tools/security/john/default.nix
index 7552b21ed333..e55e97656f63 100644
--- a/pkgs/tools/security/john/default.nix
+++ b/pkgs/tools/security/john/default.nix
@@ -69,6 +69,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     homepage = https://github.com/magnumripper/JohnTheRipper/;
     maintainers = with maintainers; [ offline ];
-    platforms = platforms.unix;
+    platforms = [ "x86_64-linux" "x86_64-darwin"];
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 567167fc4605..cc8564603a69 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3145,9 +3145,7 @@ with pkgs;
 
   go-jira = callPackage ../applications/misc/go-jira { };
 
-  john = callPackage ../tools/security/john {
-    gcc = gcc49; # doesn't build with gcc5
-  };
+  john = callPackage ../tools/security/john { };
 
   journalbeat = callPackage ../tools/system/journalbeat { };