diff --git a/src/ResearchTree/NodeIDs.h b/src/ResearchTree/NodeIDs.h
index b99eeb9..fd0ca96 100644
--- a/src/ResearchTree/NodeIDs.h
+++ b/src/ResearchTree/NodeIDs.h
@@ -142,7 +142,7 @@ enum OSIDs: Int {
     SpartoiOS,
     SustainableShields4,
     Shields5,
-    SustainableRecharger5,
+    SustainableRecharger4,
     Enhancements5,
     FuelSave5,
     LongRange5,