diff --git a/pkgs/development/compilers/julia/1.6-bin.nix b/pkgs/development/compilers/julia/1.6-bin.nix
index acdd8a034e7b..79203ce7e0a3 100644
--- a/pkgs/development/compilers/julia/1.6-bin.nix
+++ b/pkgs/development/compilers/julia/1.6-bin.nix
@@ -67,5 +67,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ ninjin raskin ];
     platforms = [ "x86_64-linux" ];
+    mainProgram = "julia";
   };
 }
diff --git a/pkgs/development/compilers/julia/1.7-bin.nix b/pkgs/development/compilers/julia/1.7-bin.nix
index 70c9e6cb1cfc..5352d38a221a 100644
--- a/pkgs/development/compilers/julia/1.7-bin.nix
+++ b/pkgs/development/compilers/julia/1.7-bin.nix
@@ -67,5 +67,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl2Plus;
     maintainers = with lib.maintainers; [ ninjin raskin ];
     platforms = [ "x86_64-linux" ];
+    mainProgram = "julia";
   };
 }