diff --git a/soc/runtime/session.c b/soc/runtime/session.c
index 9f54198e7..8ca22c9e7 100644
--- a/soc/runtime/session.c
+++ b/soc/runtime/session.c
@@ -18,8 +18,8 @@
 #include "exceptions.h"
 #include "session.h"
 
-#define BUFFER_IN_SIZE (32*1024)
-#define BUFFER_OUT_SIZE (32*1024)
+#define BUFFER_IN_SIZE (1024*1024)
+#define BUFFER_OUT_SIZE (1024*1024)
 
 static int buffer_in_index;
 /* The 9th byte (right after the header) of buffer_in must be aligned