diff --git a/lib/Base/ErrorType.cpp b/lib/Base/ErrorType.cpp
index 94514bd..39a98dd 100644
--- a/lib/Base/ErrorType.cpp
+++ b/lib/Base/ErrorType.cpp
@@ -104,7 +104,9 @@ void Log_Error_2 (string file_path, string function_name, s32 line_number, Error
 Error* copy_error (Thread_Context* tctx, Error* old_error) {
   push_arena(tctx->error_arena);
   
-  Error* error = new_error(old_error->severity, to_string(old_error));
+  string error_string_copy = copy_string(to_string(old_error));
+  
+  Error* error = new_error(old_error->severity, error_string_copy);
   
   error->thread_id     = old_error->thread_id;
   error->source_line   = old_error->source_line;
@@ -221,12 +223,10 @@ ArrayView<Error*> get_all_errors (Thread_Context* tctx) {
     current_error = current_error->next_error;
   }
   
-  
   // #TODO(Low priority): also recurse through child threads?
   // NOTE: I don't think we actually want this, because we merge
   // our errors on the main thread when we thread_deinit.
-  // for_each(t, tctx->child_threads) {
-  // }
+  // for_each(t, tctx->child_threads) {  }
   
   return error_array;
 }