diff --git a/lib/stdlib/assert.c b/lib/stdlib/assert.c
new file mode 100644
index 0000000..39f30d1
--- /dev/null
+++ b/lib/stdlib/assert.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+
+/*
+ * This is a basic implementation. This could be improved.
+ */
+void __assert (const char *function, const char *file, unsigned int line,
+		const char *assertion)
+{
+	mp_printf("ASSERT: %s <%d> : %s\n", function, line, assertion);
+	while (1);
+}