diff --git a/crypto/secp256k1/libsecp256k1/src/modules/ecdh/tests_impl.h b/crypto/secp256k1/libsecp256k1/src/modules/ecdh/tests_impl.h
index 85a5d0a9a6..795f3b81a5 100644
--- a/crypto/secp256k1/libsecp256k1/src/modules/ecdh/tests_impl.h
+++ b/crypto/secp256k1/libsecp256k1/src/modules/ecdh/tests_impl.h
@@ -75,7 +75,7 @@ void test_bad_scalar(void) {
     unsigned char s_overflow[32] = {
         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe,
-        0xba, 0xae, 0xdc, 0xe6, 0xaf, 0x48, 0xa0, 0x3b,
+        0xba, 0xae, 0XDC, 0xe6, 0xaf, 0x48, 0xa0, 0x3b,
         0xbf, 0xd2, 0x5e, 0x8c, 0xd0, 0x36, 0x41, 0x41
     };
     unsigned char s_rand[32] = { 0 };
diff --git a/crypto/secp256k1/libsecp256k1/src/modules/recovery/tests_impl.h b/crypto/secp256k1/libsecp256k1/src/modules/recovery/tests_impl.h
index 765c7dd81e..8dea162bfc 100644
--- a/crypto/secp256k1/libsecp256k1/src/modules/recovery/tests_impl.h
+++ b/crypto/secp256k1/libsecp256k1/src/modules/recovery/tests_impl.h
@@ -290,7 +290,7 @@ void test_ecdsa_recovery_edge_cases(void) {
         unsigned char sigbderlong[40] = {
             0x30, 0x26, 0x02, 0x21, 0x00, 0xFF, 0xFF, 0xFF,
             0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xBA, 0xAE, 0xDC,
+            0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xBA, 0xAE, 0XDC,
             0xE6, 0xAF, 0x48, 0xA0, 0x3B, 0xBF, 0xD2, 0x5E,
             0x8C, 0xD0, 0x36, 0x41, 0x45, 0x02, 0x01, 0x04
         };