Avoid a lowercase letter in a macro name
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index f644752..69b49f3 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -12,7 +12,7 @@
* are always executed. In the future we should make this conditional
* so that tests that require a lot of memory are skipped on constrained
* platforms. */
-#define HAVE_RAM_AVAILABLE_128k
+#define HAVE_RAM_AVAILABLE_128K
/** An invalid export length that will never be set by psa_export_key(). */
static const size_t INVALID_EXPORT_LENGTH = ~0U;