diff --git a/src/routes/voteOnSponsorTime.ts b/src/routes/voteOnSponsorTime.ts
index 0ea328d..1cc9cda 100644
--- a/src/routes/voteOnSponsorTime.ts
+++ b/src/routes/voteOnSponsorTime.ts
@@ -378,6 +378,9 @@ export async function voteOnSponsorTime(req: Request, res: Response) {
             if (isVIP && incrementAmount > 0 && voteTypeEnum === voteTypes.normal) {
                 // Lock this submission
                 db.prepare('run', "UPDATE sponsorTimes SET locked = 1 WHERE UUID = ?", [UUID]);
+            } else if (isVIP && incrementAmount < 0 && voteTypeEnum === voteTypes.normal) {
+                 // Unlock if a VIP downvotes it
+                 db.prepare('run', "UPDATE sponsorTimes SET locked = 0 WHERE UUID = ?", [UUID]);
             }
 
             //for each positive vote, see if a hidden submission can be shown again
diff --git a/test/cases/voteOnSponsorTime.ts b/test/cases/voteOnSponsorTime.ts
index 8ac4574..8345448 100644
--- a/test/cases/voteOnSponsorTime.ts
+++ b/test/cases/voteOnSponsorTime.ts
@@ -465,4 +465,22 @@ describe('voteOnSponsorTime', () => {
         .catch(err => done(err));
     });
 
+    it('VIP downvote should unlock segment', (done: Done) => {
+        fetch(getbaseURL()
+            + "/api/voteOnSponsorTime?userID=VIPUser&UUID=segment-locking-uuid-1&type=0")
+        .then(res => {
+            if (res.status === 200) {
+                let row = db.prepare('get', "SELECT locked FROM sponsorTimes WHERE UUID = ?", ["segment-locking-uuid-1"]);
+                if (!row?.locked) {
+                    done();
+                } else {
+                    done("Segment not locked");
+                }
+            } else {
+                done("Status code was " + res.status + " instead of 200");
+            }
+        })
+        .catch(err => done(err));
+    });
+
 });