diff --git a/include/mbedtls/error.h b/include/mbedtls/error.h
index 49a6416..f00b4f5 100644
--- a/include/mbedtls/error.h
+++ b/include/mbedtls/error.h
@@ -129,7 +129,7 @@
  *        Only used when invasive testing is enabled via MBEDTLS_TEST_HOOKS.
  */
 extern void (*mbedtls_test_hook_error_add)( int, int, const char *, int );
-extern void (*mbedtls_test_hook_assert_test)( int test, const char * file, int line );
+extern void (*mbedtls_test_hook_test_fail)( const char * test, int line, const char * file );
 #endif
 
 /**