diff --git a/include/neuron/type.h b/include/neuron/type.h
index 1fffca05..6ef75713 100644
--- a/include/neuron/type.h
+++ b/include/neuron/type.h
@@ -146,7 +146,7 @@ typedef struct {
     uint8_t *  ptr;
 } neu_value_ptr_t;
 
-#define NEU_VALUE_SIZE 128
+#define NEU_VALUE_SIZE 1024
 
 typedef struct {
     uint8_t bytes[NEU_VALUE_SIZE];