diff --git a/firmware/export/as3525v2.h b/firmware/export/as3525v2.h
index 2a2f67cbc5..b5e025b8fa 100644
--- a/firmware/export/as3525v2.h
+++ b/firmware/export/as3525v2.h
@@ -26,4 +26,10 @@
 
 /* insert differences here */
 
+#ifndef IRAM_SIZE   /* protect in case the define name changes */
+#   error IRAM_SIZE not defined !
+#endif
+#undef IRAM_SIZE
+#define IRAM_SIZE 0x100000
+
 #endif /* __AS3525V2_H__ */