diff --git a/gdpr/impl.go b/gdpr/impl.go
index 481e92df0c7..aca07fd068d 100644
--- a/gdpr/impl.go
+++ b/gdpr/impl.go
@@ -116,10 +116,6 @@ func (p *permissionsImpl) allowSync(ctx context.Context, vendorID uint16, consen
 		return false, nil
 	}
 
-	if parsedConsent.Version() != 2 {
-		return false, nil
-	}
-
 	if !p.cfg.TCF2.Purpose1.Enabled {
 		return true, nil
 	}
@@ -137,11 +133,12 @@ func (p *permissionsImpl) allowActivities(ctx context.Context, vendorID uint16,
 		return false, false, false, err
 	}
 
+	// vendor will be nil if not a valid TCF2 consent string
 	if vendor == nil {
 		return false, false, false, nil
 	}
 
-	if parsedConsent.Version() != 2 || !p.cfg.TCF2.Enabled {
+	if !p.cfg.TCF2.Enabled {
 		return true, false, false, nil
 	}
 
diff --git a/gdpr/impl_test.go b/gdpr/impl_test.go
index 23050a22975..d26c0c57231 100644
--- a/gdpr/impl_test.go
+++ b/gdpr/impl_test.go
@@ -798,3 +798,21 @@ func TestAllowActivitiesBidRequests(t *testing.T) {
 		assert.EqualValuesf(t, td.passID, passID, "PassID failure on %s", td.description)
 	}
 }
+
+func TestTCF1Consent(t *testing.T) {
+	bidderAllowedByConsent := openrtb_ext.BidderAppnexus
+	tcf1Consent := "BOS2bx5OS2bx5ABABBAAABoAAAABBwAA"
+
+	perms := permissionsImpl{
+		vendorIDs: map[openrtb_ext.BidderName]uint16{
+			openrtb_ext.BidderAppnexus: 2,
+		},
+	}
+
+	bidReq, passGeo, passID, err := perms.AuctionActivitiesAllowed(context.Background(), bidderAllowedByConsent, "", SignalYes, tcf1Consent, false)
+
+	assert.Nil(t, err, "TCF1 consent - no error returned")
+	assert.Equal(t, false, bidReq, "TCF1 consent - bid request not allowed")
+	assert.Equal(t, false, passGeo, "TCF1 consent - passing geo not allowed")
+	assert.Equal(t, false, passID, "TCF1 consent - passing id not allowed")
+}