diff --git a/pkgs/top-level/java-packages.nix b/pkgs/top-level/java-packages.nix
index e63c23f34bf3..4c2fd0d4251e 100644
--- a/pkgs/top-level/java-packages.nix
+++ b/pkgs/top-level/java-packages.nix
@@ -62,7 +62,7 @@ in {
 
     mkOpenjdkLinuxOnly = path-linux: args: let
       openjdk = callPackage path-linux  (gnomeArgs // args);
-    in openjdk // {
+    in assert stdenv.isLinux; openjdk // {
       headless = openjdk.override { headless = true; };
     };