diff --git a/src/core/hw/default_keys.h b/src/core/hw/default_keys.h
index 5eb8be13c..22fdcdc64 100644
--- a/src/core/hw/default_keys.h
+++ b/src/core/hw/default_keys.h
@@ -474,4 +474,4 @@ constexpr unsigned char default_keys_enc[] = {
     0x14, 0x79, 0xD0, 0xA8, 0x3C, 0xB3, 0x46, 0xC3, 0xDA, 0x6C, 0x0C, 0xEC, 0x2A, 0xB2, 0x9B, 0x21,
     0xB2, 0xAD, 0x8C, 0x0C, 0x85, 0x9A, 0x8D, 0x7C, 0x10, 0xEA, 0x51, 0x1D, 0x2D, 0xDE, 0x7D, 0x8F};
 
-const long int default_keys_enc_size = sizeof(default_keys_enc);
+constexpr long int default_keys_enc_size = sizeof(default_keys_enc);