diff --git a/src/test/testcommon.c b/src/test/testcommon.c
index b3863817..15658dd5 100644
--- a/src/test/testcommon.c
+++ b/src/test/testcommon.c
@@ -11,6 +11,8 @@
 
 #include "testcommon.h"
 
+#define TESTBUF_SZ 1024
+
 static char input_str[TESTBUF_SZ]; // ASCII
 static unsigned int input_length = 0;
 static unsigned int input_counter = 0;
diff --git a/src/test/testcommon.h b/src/test/testcommon.h
index 9fe6799a..0ba8fc5e 100644
--- a/src/test/testcommon.h
+++ b/src/test/testcommon.h
@@ -23,8 +23,6 @@
 #define BLANK_SCREEN "6C8ABA272F220F00BE0E76A8659A1E30C2D3CDBE"
 #define BOOT_SCREEN  "F8D6C781E0BB7B3DDBECD69B25E429D845506594"
 
-#define TESTBUF_SZ 256
-
 #define ASSERT_SHA(SHA_STR) \
     do { \
         uint8_t md[SHA_DIGEST_LENGTH]; \