diff --git a/AI/Nullkiller/AIGateway.cpp b/AI/Nullkiller/AIGateway.cpp
index 55a5029a3..f7b17e2f1 100644
--- a/AI/Nullkiller/AIGateway.cpp
+++ b/AI/Nullkiller/AIGateway.cpp
@@ -1056,7 +1056,8 @@ void AIGateway::pickBestArtifacts(const CGHeroInstance * h, const CGHeroInstance
 				if(location.slot == ArtifactPosition::MACH4) // don't attempt to move catapult
 					continue;
 
-				auto s = cb->getHero(location.artHolder)->getSlot(location.slot);
+				auto artHolder = cb->getHero(location.artHolder);
+				auto s = artHolder->getSlot(location.slot);
 				if(!s || s->locked) //we can't move locks
 					continue;
 				auto artifact = s->artifact;
@@ -1084,10 +1085,27 @@ void AIGateway::pickBestArtifacts(const CGHeroInstance * h, const CGHeroInstance
 						if(otherSlot && otherSlot->artifact) //we need to exchange artifact for better one
 						{
 							//if that artifact is better than what we have, pick it
-							if(compareArtifacts(artifact, otherSlot->artifact) && artifact->canBePutAt(target, slot, true)) //combined artifacts are not always allowed to move
+							if(compareArtifacts(artifact, otherSlot->artifact)
+								&& artifact->canBePutAt(target, slot, true)) //combined artifacts are not always allowed to move
 							{
-								ArtifactLocation destLocation(target->id, slot);
-								cb->swapArtifacts(location, ArtifactLocation(target->id, target->getArtPos(otherSlot->artifact)));
+								logAi->trace(
+									"Exchange artifacts %s <-> %s",
+									artifact->artType->getNameTranslated(),
+									otherSlot->artifact->artType->getNameTranslated());
+
+								if(!otherSlot->artifact->canBePutAt(artHolder, location.slot, true))
+								{
+									ArtifactLocation destLocation(target->id, slot);
+									ArtifactLocation backpack(artHolder->id, ArtifactPosition::BACKPACK_START);
+									
+									cb->swapArtifacts(destLocation, backpack);
+									cb->swapArtifacts(location, destLocation);
+								}
+								else
+								{
+									cb->swapArtifacts(location, ArtifactLocation(target->id, target->getArtPos(otherSlot->artifact)));
+								}
+
 								changeMade = true;
 								break;
 							}
diff --git a/client/ClientCommandManager.cpp b/client/ClientCommandManager.cpp
index 12636ed35..39a5aabdf 100644
--- a/client/ClientCommandManager.cpp
+++ b/client/ClientCommandManager.cpp
@@ -136,8 +136,9 @@ void ClientCommandManager::handleControlaiCommand(std::istringstream& singleWord
 
 	for(auto & elem : CSH->client->gameState()->players)
 	{
-		if(elem.second.human || 
-			(colorName.length() && elem.first.getNum() != vstd::find_pos(GameConstants::PLAYER_COLOR_NAMES, colorName)))
+		if(!elem.first.isValidPlayer()
+			|| elem.second.human
+			|| (colorName.length() && elem.first.getNum() != vstd::find_pos(GameConstants::PLAYER_COLOR_NAMES, colorName)))
 		{
 			continue;
 		}
diff --git a/lib/modding/ActiveModsInSaveList.cpp b/lib/modding/ActiveModsInSaveList.cpp
index b7b03577a..17e8927f0 100644
--- a/lib/modding/ActiveModsInSaveList.cpp
+++ b/lib/modding/ActiveModsInSaveList.cpp
@@ -47,7 +47,7 @@ void ActiveModsInSaveList::verifyActiveMods(const std::map<TModID, ModVerificati
 			missingMods.push_back(VLC->modh->getModInfo(compared.first).getVerificationInfo().name);
 
 		if (compared.second == ModVerificationStatus::EXCESSIVE)
-			excessiveMods.push_back(modList.at(compared.first).name);
+			excessiveMods.push_back(VLC->modh->getModInfo(compared.first).getVerificationInfo().name);
 	}
 
 	if(!missingMods.empty() || !excessiveMods.empty())