diff --git a/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOption.java b/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOption.java
index da6e0eb68b1..734575de298 100644
--- a/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOption.java
+++ b/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOption.java
@@ -92,7 +92,7 @@ public class ProPurchaseOption {
     transportCost = unitAttachment.getTransportCost() * quantity;
     carrierCost = unitAttachment.getCarrierCost() * quantity;
     isAir = unitAttachment.getIsAir();
-    isSub = !unitAttachment.getCanNotTarget().isEmpty();
+    isSub = unitAttachment.getCanEvade();
     isDestroyer = unitAttachment.getIsDestroyer();
     isTransport = unitAttachment.getTransportCapacity() > 0;
     isLandTransport = unitAttachment.isLandTransport();
diff --git a/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOptionMap.java b/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOptionMap.java
index db469fbfe01..aafb396c274 100644
--- a/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOptionMap.java
+++ b/game-app/game-core/src/main/java/games/strategy/triplea/ai/pro/data/ProPurchaseOptionMap.java
@@ -103,7 +103,9 @@ public ProPurchaseOptionMap(final GamePlayer player, final GameData data) {
         ProLogger.debug("Air: " + ppo);
       } else if (Matches.unitTypeIsSea().test(unitType)) {
         final ProPurchaseOption ppo = new ProPurchaseOption(rule, unitType, player, data);
-        seaDefenseOptions.add(ppo);
+        if (!ppo.isSub()) {
+          seaDefenseOptions.add(ppo);
+        }
         if (ppo.isTransport()) {
           seaTransportOptions.add(ppo);
         }