diff --git a/src/Server.zig b/src/Server.zig
index 876ae28..82c0d71 100644
--- a/src/Server.zig
+++ b/src/Server.zig
@@ -20,7 +20,7 @@ const tracy = @import("tracy.zig");
 const uri_utils = @import("uri.zig");
 const diff = @import("diff.zig");
 const ComptimeInterpreter = @import("ComptimeInterpreter.zig");
-const analyser_completions = @import("analyser/completions.zig");
+const analyser = @import("analyser/analyser.zig");
 
 const data = @import("data/data.zig");
 const snipped_data = @import("data/snippets.zig");
@@ -596,8 +596,7 @@ fn typeToCompletion(
         ),
         .primitive, .array_index => {},
         .@"comptime" => |co| {
-            const items = try analyser_completions.dotCompletions(allocator, &co.interpreter.ip, co.value.ty, co.value.val, co.value.node_idx);
-            try list.appendSlice(allocator, items);
+            try analyser.completions.dotCompletions(allocator, list, &co.interpreter.ip, co.value.ty, co.value.val, co.value.node_idx);
         },
     }
 }
diff --git a/src/analyser/completions.zig b/src/analyser/completions.zig
index 276babc..207d12c 100644
--- a/src/analyser/completions.zig
+++ b/src/analyser/completions.zig
@@ -4,19 +4,16 @@ const types = @import("../lsp.zig");
 
 const Ast = std.zig.Ast;
 
-
-/// TODO use std.ArrayListUnmanaged instead of returning a slice
 pub fn dotCompletions(
     arena: std.mem.Allocator,
+    completions: *std.ArrayListUnmanaged(types.CompletionItem),
     ip: *InternPool,
     ty: InternPool.Index,
     val: InternPool.Index,
     node: ?Ast.Node.Index
-) error{OutOfMemory}![]types.CompletionItem {
+) error{OutOfMemory}!void {
     _ = node;
 
-    var completions = std.ArrayListUnmanaged(types.CompletionItem){};
-
     const key = ip.indexToKey(ty);
     const inner_key = switch (key) {
         .pointer_type => |info| if (info.size == .One) ip.indexToKey(info.elem_type) else key,
@@ -160,5 +157,4 @@ pub fn dotCompletions(
         .union_value,
         => unreachable,
     }
-    return try completions.toOwnedSlice(arena);
 }