diff --git a/InjectedTimer/ScriptFunction.cs b/InjectedTimer/ScriptFunction.cs
index 698bc21..3f2709a 100644
--- a/InjectedTimer/ScriptFunction.cs
+++ b/InjectedTimer/ScriptFunction.cs
@@ -93,7 +93,7 @@ public static string ReadASCII(long addr, int count)
         private static int ASCIILength(byte[] data)
         {
             int i = 0;
-            while(data[i] != 0) i++;
+            while(i < data.Length && data[i] != 0) i++;
             return i;
         }