diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 3d174dc53..28688e7d6 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -1449,7 +1449,8 @@ struct CmdFlakeShow : FlakeCommand, MixJSON
 
         auto cache = openEvalCache(*state, flake);
 
-        auto j = visit(*cache->getRoot(), {}, fmt(ANSI_BOLD "%s" ANSI_NORMAL, flake->flake.lockedRef), "");
+        auto lockedRef = flake->flake.lockedRef.to_string();
+        auto j = nlohmann::json::object({ {lockedRef, visit(*cache->getRoot(), {}, fmt(ANSI_BOLD "%s" ANSI_NORMAL, lockedRef), "")} });
         if (json)
             printJSON(j);
     }
diff --git a/tests/functional/flakes/show.sh b/tests/functional/flakes/show.sh
index 7fcc6aca9..9bdccd19e 100755
--- a/tests/functional/flakes/show.sh
+++ b/tests/functional/flakes/show.sh
@@ -8,10 +8,25 @@ mkdir -p "$flakeDir"
 writeSimpleFlake "$flakeDir"
 pushd "$flakeDir"
 
+# Check the flake reference that was produced.
+nix flake show --json > output.json
+nix eval --impure --expr '
+with builtins;
+let
+  flakeRef = parseFlakeRef (head (attrNames (fromJSON (readFile ./output.json))));
+  narHash = if match ".*darwin" currentSystem != null
+    then "sha256-MhmXWT9U41eDFezA02mAj3PxBO21icT5VvvPSC1epDU="
+    else "sha256-op9gWTEmDXergxx2PojSTrxVREG7NLcrhySSun3DQd0="
+  ;
+in
+assert flakeRef.narHash == narHash;
+assert flakeRef.type == "path";
+true
+'
 
 # By default: Only show the packages content for the current system and no
 # legacyPackages at all
-nix flake show --json > show-output.json
+nix flake show --json | jq 'to_entries[0].value' > show-output.json
 nix eval --impure --expr '
 let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
 in
@@ -22,7 +37,7 @@ true
 '
 
 # With `--all-systems`, show the packages for all systems
-nix flake show --json --all-systems > show-output.json
+nix flake show --json --all-systems | jq 'to_entries[0].value' > show-output.json
 nix eval --impure --expr '
 let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
 in
@@ -32,7 +47,7 @@ true
 '
 
 # With `--legacy`, show the legacy packages
-nix flake show --json --legacy > show-output.json
+nix flake show --json --legacy | jq 'to_entries[0].value' > show-output.json
 nix eval --impure --expr '
 let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
 in
@@ -59,7 +74,7 @@ cat >flake.nix <<EOF
   };
 }
 EOF
-nix flake show --json --all-systems > show-output.json
+nix flake show --json --all-systems | jq 'to_entries[0].value' > show-output.json
 nix eval --impure --expr '
 let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
 in
@@ -79,7 +94,7 @@ cat >flake.nix <<EOF
   };
 }
 EOF
-nix flake show --json --legacy --all-systems > show-output.json
+nix flake show --json --legacy --all-systems | jq 'to_entries[0].value' > show-output.json
 nix eval --impure --expr '
 let show_output = builtins.fromJSON (builtins.readFile ./show-output.json);
 in