diff --git a/Source/msg.cpp b/Source/msg.cpp
index 4e756f619..bd0d97fb3 100644
--- a/Source/msg.cpp
+++ b/Source/msg.cpp
@@ -2377,7 +2377,7 @@ static DWORD On_SYNCQUEST(TCmd *pCmd, int pnum)
 		msg_send_packet(pnum, p, sizeof(*p));
 	else {
 		if (pnum != myplr)
-			SetMultiQuest(p->q, p->qstate, p->qlog, p->qvar1);
+			SetMultiQuest(p->q, p->qstate, p->qlog != 0, p->qvar1);
 		sgbDeltaChanged = true;
 	}
 
diff --git a/Source/quests.cpp b/Source/quests.cpp
index 935c536bb..0cafb36b3 100644
--- a/Source/quests.cpp
+++ b/Source/quests.cpp
@@ -813,7 +813,7 @@ void QuestlogESC()
 	}
 }
 
-void SetMultiQuest(int q, quest_state s, int l, int v1)
+void SetMultiQuest(int q, quest_state s, bool log, int v1)
 {
 	if (gbIsSpawn)
 		return;
@@ -821,7 +821,8 @@ void SetMultiQuest(int q, quest_state s, int l, int v1)
 	if (quests[q]._qactive != QUEST_DONE) {
 		if (s > quests[q]._qactive)
 			quests[q]._qactive = s;
-		quests[q]._qlog |= l;
+		if (log)
+			quests[q]._qlog = true;
 		if (v1 > quests[q]._qvar1)
 			quests[q]._qvar1 = v1;
 	}
diff --git a/Source/quests.h b/Source/quests.h
index 10e714267..cf097905f 100644
--- a/Source/quests.h
+++ b/Source/quests.h
@@ -94,7 +94,7 @@ void QuestlogUp();
 void QuestlogDown();
 void QuestlogEnter();
 void QuestlogESC();
-void SetMultiQuest(int q, quest_state s, int l, int v1);
+void SetMultiQuest(int q, quest_state s, bool log, int v1);
 
 /* rdata */
 extern QuestData questlist[];