diff --git a/autogold.go b/autogold.go
index 7b7e354..79ffb8e 100644
--- a/autogold.go
+++ b/autogold.go
@@ -142,7 +142,7 @@ func ExpectFile(t *testing.T, got interface{}, opts ...Option) {
 				t.Fatal(err)
 			}
 		}
-		if *failOnUpdate {
+		if *failOnUpdate || !*update {
 			t.Log(fmt.Errorf("mismatch (-want +got):\n%s", colorDiff(diff)))
 			t.FailNow()
 		}
diff --git a/expect.go b/expect.go
index e2c9635..eca05cf 100644
--- a/expect.go
+++ b/expect.go
@@ -192,7 +192,7 @@ func Expect(want interface{}) Value {
 					t.Fatal(err)
 				}
 			}
-			if *failOnUpdate {
+			if *failOnUpdate || !*update {
 				writeProfile()
 				t.Log(fmt.Errorf("mismatch (-want +got):\n%s", colorDiff(diff)))
 				t.FailNow()