diff --git a/src/SemanticTree.zig b/src/SemanticTree.zig
index 6a224f2f..ba3a49f2 100644
--- a/src/SemanticTree.zig
+++ b/src/SemanticTree.zig
@@ -640,10 +640,10 @@ pub const NodeDetails = struct {
 };
 
 pub fn getNodeDetails(
+    arena: std.mem.Allocator,
     node: *Node,
     registry: *CDPNode.Registry,
     page: *Page,
-    arena: std.mem.Allocator,
 ) !NodeDetails {
     const cdp_node = try registry.register(node);
     const axn = AXNode.fromNode(node);
diff --git a/src/cdp/domains/lp.zig b/src/cdp/domains/lp.zig
index 87cbce3e..74858353 100644
--- a/src/cdp/domains/lp.zig
+++ b/src/cdp/domains/lp.zig
@@ -154,7 +154,7 @@ fn getNodeDetails(cmd: anytype) !void {
 
     const node = (bc.node_registry.lookup_by_id.get(params.backendNodeId) orelse return error.InvalidNodeId).dom;
 
-    const details = SemanticTree.getNodeDetails(node, &bc.node_registry, page, cmd.arena) catch return error.InternalError;
+    const details = SemanticTree.getNodeDetails(cmd.arena, node, &bc.node_registry, page) catch return error.InternalError;
 
     return cmd.sendResult(.{
         .nodeDetails = details,
diff --git a/src/mcp/tools.zig b/src/mcp/tools.zig
index b98d2cef..15c4b099 100644
--- a/src/mcp/tools.zig
+++ b/src/mcp/tools.zig
@@ -404,7 +404,7 @@ fn handleNodeDetails(server: *Server, arena: std.mem.Allocator, id: std.json.Val
     };
 
     const page = server.session.currentPage().?;
-    const details = lp.SemanticTree.getNodeDetails(node.dom, &server.node_registry, page, arena) catch {
+    const details = lp.SemanticTree.getNodeDetails(arena, node.dom, &server.node_registry, page) catch {
         return server.sendError(id, .InternalError, "Failed to get node details");
     };