diff --git a/library/platform.c b/library/platform.c
index 8a26f7b..34295ad 100644
--- a/library/platform.c
+++ b/library/platform.c
@@ -140,4 +140,27 @@
 }
 #endif /* POLARSSL_PLATFORM_FPRINTF_ALT */
 
+#if defined(POLARSSL_PLATFORM_EXIT_ALT)
+#if !defined(POLARSSL_STD_EXIT)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static void platform_exit_uninit( int status )
+{
+    ((void) status);
+    return( 0 );
+}
+
+#define POLARSSL_STD_EXIT   platform_exit_uninit
+#endif /* !POLARSSL_STD_EXIT */
+
+int (*polarssl_exit)( int status ) = POLARSSL_STD_EXIT;
+
+int platform_set_exit( void (*exit_func)( int status ) )
+{
+    polarssl_exit = exit_func;
+    return( 0 );
+}
+#endif /* POLARSSL_PLATFORM_EXIT_ALT */
+
 #endif /* POLARSSL_PLATFORM_C */