diff --git a/Patch/ClassPatch/scrMistakesManagerPatch.cs b/Patch/ClassPatch/scrMistakesManagerPatch.cs
new file mode 100644
index 0000000..c55bbaa
--- /dev/null
+++ b/Patch/ClassPatch/scrMistakesManagerPatch.cs
@@ -0,0 +1,16 @@
+using HarmonyLib;
+
+namespace ADOFAIRenderer.Patch.ClassPatch
+{
+    [HarmonyPatch(typeof(scrMistakesManager))]
+    // ReSharper disable once InconsistentNaming
+    public static class scrMistakesManagerPatch
+    {
+        [HarmonyPrefix]
+        [HarmonyPatch("SaveCustom")]
+        public static bool PreventSaveCustom()
+        {
+            return !RenderMod.IsRendering;
+        }
+    }
+}