diff --git a/src/dobjtype.cpp b/src/dobjtype.cpp
index 0d443bb69..cdac25902 100644
--- a/src/dobjtype.cpp
+++ b/src/dobjtype.cpp
@@ -317,7 +317,6 @@ PClass *PClass::CreateDerivedClass (FName name, unsigned int size)
 		info->DamageFactors = NULL;
 		info->PainChances = NULL;
 		info->ColorSets = NULL;
-		info->ConversationID = -1;
 		m_RuntimeActors.Push (type);
 	}
 	return type;
@@ -412,7 +411,6 @@ void PClass::InitializeActorInfo ()
 	info->DamageFactors = NULL;
 	info->PainChances = NULL;
 	info->ColorSets = NULL;
-	info->ConversationID = -1;
 	m_RuntimeActors.Push (this);
 }
 
diff --git a/src/info.h b/src/info.h
index d7d939c0b..9480f5f59 100644
--- a/src/info.h
+++ b/src/info.h
@@ -203,7 +203,6 @@ struct FActorInfo
 	BYTE GameFilter;
 	BYTE SpawnID;
 	SWORD DoomEdNum;
-	int ConversationID;
 	FStateLabels *StateList;
 	DmgFactors *DamageFactors;
 	PainChanceList *PainChances;
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 1e8f51f97..1e47dfd86 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -257,7 +257,6 @@ DEFINE_INFO_PROPERTY(conversationid, IiI, Actor)
 
 	}
 
-	bag.Info->ConversationID = convid;
 	if (convid <= 0) return;	// 0 is not usable because the dialogue scripts use it as 'no object'.
 	SetStrifeType(convid, info->Class);
 }