diff --git a/src/compile.zig b/src/compile.zig
index a079bfb..8c7f8a8 100644
--- a/src/compile.zig
+++ b/src/compile.zig
@@ -219,7 +219,7 @@ pub const Module = struct {
 
     pub const Namespace = struct {
         parent: ?*Namespace,
-        decls: std.AutoHashMapUnmanaged(InternPool.Index, Decl),
+        decls: std.AutoArrayHashMapUnmanaged(InternPool.Index, Decl),
 
         pub const Decl = struct {
             tag: Tag,