diff --git a/pkgs/development/compilers/zulu/8.nix b/pkgs/development/compilers/zulu/8.nix
index dd1660d9fec..591f10b3be9 100644
--- a/pkgs/development/compilers/zulu/8.nix
+++ b/pkgs/development/compilers/zulu/8.nix
@@ -105,5 +105,6 @@ in stdenv.mkDerivation {
     '';
     maintainers = with maintainers; [ fpletz ];
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
+    mainProgram = "java";
   };
 }
diff --git a/pkgs/development/compilers/zulu/default.nix b/pkgs/development/compilers/zulu/default.nix
index c7b01877ad5..cd118187748 100644
--- a/pkgs/development/compilers/zulu/default.nix
+++ b/pkgs/development/compilers/zulu/default.nix
@@ -108,5 +108,6 @@ in stdenv.mkDerivation {
     '';
     maintainers = with maintainers; [ fpletz ];
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
+    mainProgram = "java";
   };
 }