diff --git a/test/api/v3/integration/groups/POST-groups_id_removeMember.test.js b/test/api/v3/integration/groups/POST-groups_id_removeMember.test.js
index 0ebde39361..c051ea6bf0 100644
--- a/test/api/v3/integration/groups/POST-groups_id_removeMember.test.js
+++ b/test/api/v3/integration/groups/POST-groups_id_removeMember.test.js
@@ -84,7 +84,7 @@ describe('POST /groups/:groupId/removeMember/:memberId', () => {
 
   context('Party', () => {
     let party;
-    let partyleader;
+    let partyLeader;
     let partyInvitedUser;
     let partyMember;
 
@@ -100,13 +100,13 @@ describe('POST /groups/:groupId/removeMember/:memberId', () => {
       });
 
       party = group;
-      partyleader = groupLeader;
+      partyLeader = groupLeader;
       partyInvitedUser = invitees[0];
       partyMember = members[0];
     });
 
     it('can remove other members', async () => {
-      await partyleader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
+      await partyLeader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
 
       let memberRemoved = await partyMember.get('/user');
 
@@ -115,16 +115,61 @@ describe('POST /groups/:groupId/removeMember/:memberId', () => {
 
     it('updates memberCount', async () => {
       let oldMemberCount = party.memberCount;
-      await partyleader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
-      await expect(partyleader.get(`/groups/${party._id}`)).to.eventually.have.property('memberCount', oldMemberCount - 1);
+      await partyLeader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
+      await expect(partyLeader.get(`/groups/${party._id}`)).to.eventually.have.property('memberCount', oldMemberCount - 1);
     });
 
     it('can remove other invites', async () => {
-      await partyleader.post(`/groups/${party._id}/removeMember/${partyInvitedUser._id}`);
+      await partyLeader.post(`/groups/${party._id}/removeMember/${partyInvitedUser._id}`);
 
       let invitedUserWithoutInvite = await partyInvitedUser.get('/user');
 
       expect(_.findIndex(invitedUserWithoutInvite.invitations.party, {id: party._id})).eql(-1);
     });
+
+    it('removes user from quest when removing user from party after quest starts', async () => {
+      let petQuest = 'whale';
+      await partyLeader.update({
+        [`items.quests.${petQuest}`]: 1,
+      });
+
+      await partyLeader.post(`/groups/${party._id}/quests/invite/${petQuest}`);
+      await partyMember.post(`/groups/${party._id}/quests/accept`);
+
+      await party.sync();
+
+      expect(party.quest.members[partyLeader._id]).to.be.true;
+      expect(party.quest.members[partyMember._id]).to.be.true;
+
+      await partyLeader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
+
+      await party.sync();
+
+      expect(party.quest.members[partyLeader._id]).to.be.true;
+      expect(party.quest.members[partyMember._id]).to.not.exist;
+    });
+
+    it('removes user from quest when removing user from party before quest starts', async () => {
+      let petQuest = 'whale';
+      await partyLeader.update({
+        [`items.quests.${petQuest}`]: 1,
+      });
+      await partyInvitedUser.post(`/groups/${party._id}/join`);
+      await partyLeader.post(`/groups/${party._id}/quests/invite/${petQuest}`);
+      await partyMember.post(`/groups/${party._id}/quests/accept`);
+
+      await party.sync();
+
+      expect(party.quest.active).to.be.false;
+      expect(party.quest.members[partyLeader._id]).to.be.true;
+      expect(party.quest.members[partyMember._id]).to.be.true;
+
+      await partyLeader.post(`/groups/${party._id}/removeMember/${partyMember._id}`);
+
+      await party.sync();
+
+      expect(party.quest.members[partyLeader._id]).to.be.true;
+      expect(party.quest.members[partyMember._id]).to.not.exist;
+    });
   });
 });
diff --git a/website/server/controllers/api-v3/groups.js b/website/server/controllers/api-v3/groups.js
index d2bb820370..62fba9deb5 100644
--- a/website/server/controllers/api-v3/groups.js
+++ b/website/server/controllers/api-v3/groups.js
@@ -436,7 +436,7 @@ api.removeGroupMember = {
         group.quest.leader = undefined;
       } else if (group.quest && group.quest.members) {
         // remove member from quest
-        group.quest.members[member._id] = undefined;
+        delete group.quest.members[member._id];
         group.markModified('quest.members');
       }