diff --git a/shared-module/warnings/__init__.c b/shared-module/warnings/__init__.c
index e12958600f..9ee52619a5 100644
--- a/shared-module/warnings/__init__.c
+++ b/shared-module/warnings/__init__.c
@@ -48,7 +48,7 @@ void common_hal_warnings_warn(const char *message, const mp_obj_type_t *category
     mp_printf(MICROPY_ERROR_PRINTER, "%q: %s\n", category->name, message);
 }
 
-void warnings_warn(const mp_obj_type_t *category, const compressed_string_t *message, ...) {
+void warnings_warn(const mp_obj_type_t *category, mp_rom_error_text_t message, ...) {
     warnings_action_t action = MP_STATE_THREAD(warnings_action);
     if (action == WARNINGS_IGNORE) {
         return;
diff --git a/shared-module/warnings/__init__.h b/shared-module/warnings/__init__.h
index 2b9e544079..5d67438ef2 100644
--- a/shared-module/warnings/__init__.h
+++ b/shared-module/warnings/__init__.h
@@ -26,4 +26,4 @@
 
 #pragma once
 
-void warnings_warn(const mp_obj_type_t *category, const compressed_string_t *message, ...);
+void warnings_warn(const mp_obj_type_t *category, mp_rom_error_text_t message, ...);