diff --git a/server/application/application.go b/server/application/application.go
index a2eb7d66c1bb62..9c143410d2a342 100644
--- a/server/application/application.go
+++ b/server/application/application.go
@@ -2210,7 +2210,7 @@ func getAmbiguousRevision(app *appv1.Application, syncReq *application.Applicati
 	ambiguousRevision := ""
 	if app.Spec.HasMultipleSources() {
 		for i, pos := range syncReq.SourcePositions {
-			if pos == int64(sourceIndex) {
+			if pos == int64(sourceIndex+1) {
 				ambiguousRevision = syncReq.Revisions[i]
 			}
 		}
diff --git a/server/application/application_test.go b/server/application/application_test.go
index 96bfeaf51221c2..b8c80d91d57e61 100644
--- a/server/application/application_test.go
+++ b/server/application/application_test.go
@@ -2919,7 +2919,7 @@ func TestGetAmbiguousRevision_MultiSource(t *testing.T) {
 		},
 	}
 	syncReq := &application.ApplicationSyncRequest{
-		SourcePositions: []int64{0, 1},
+		SourcePositions: []int64{1, 2},
 		Revisions:       []string{"rev1", "rev2"},
 	}