diff --git a/modAionImpl/src/org/aion/zero/impl/SystemExitCodes.java b/modAionImpl/src/org/aion/zero/impl/SystemExitCodes.java
new file mode 100644
index 0000000000..f77ea4d9c8
--- /dev/null
+++ b/modAionImpl/src/org/aion/zero/impl/SystemExitCodes.java
@@ -0,0 +1,8 @@
+package org.aion.zero.impl;
+
+/** Error coded to be used when calling {@link System#exit(int)} from the kernel. */
+public class SystemExitCodes {
+
+    public static final int NORMAL = 0;
+    public static final int OUT_OF_DISK_SPACE = 1;
+}