diff --git a/iso7816/utils.h b/iso7816/utils.h
index 74fcdd9..1d77a21 100644
--- a/iso7816/utils.h
+++ b/iso7816/utils.h
@@ -43,3 +43,5 @@ const char *get_value_string_or_null(const struct value_string *vs,
 
 int get_string_value(const struct value_string *vs, const char *str);
 
+
+#define OSMO_ASSERT(x) assert(x)