diff --git a/src_features/signMessageEIP712/mem.c b/src_features/signMessageEIP712/mem.c
index 17b98b2..f3ed4aa 100644
--- a/src_features/signMessageEIP712/mem.c
+++ b/src_features/signMessageEIP712/mem.c
@@ -5,7 +5,7 @@
 #include "mem.h"
 
 
-#define SIZE_MEM_BUFFER 1024
+#define SIZE_MEM_BUFFER 2048
 
 static uint8_t  mem_buffer[SIZE_MEM_BUFFER];
 static size_t   mem_idx;