diff --git a/maintner/github_test.go b/maintner/github_test.go
index 5eb8e1d..de5c3cb 100644
--- a/maintner/github_test.go
+++ b/maintner/github_test.go
@@ -530,7 +530,7 @@
 				"id": 123456,
 				"node_id": "548913adsafas84asdf48a",
 				"user": {
-					"login": "bradfitz", 
+					"login": "bradfitz",
 					"id": 2621
 				},
 				"body": "I approve this commit",
@@ -577,7 +577,7 @@
 				"id": 123456,
 				"node_id": "548913adsafas84asdf48a",
 				"user": {
-					"login": "bradfitz", 
+					"login": "bradfitz",
 					"id": 2621
 				},
 				"body": "I approve this commit",
@@ -739,7 +739,7 @@
 			return nil
 		})
 
-		if !reflect.DeepEqual(tt.wantErr, err) {
+		if !equalError(tt.wantErr, err) {
 			t.Errorf("%s: ForeachReview errs differ. got: %s, want: %s", tt.name, err, tt.wantErr)
 		}
 
@@ -751,6 +751,12 @@
 	t.Log("Tested Reviews")
 }
 
+// equalError reports whether errors a and b are considered equal.
+// They're equal if both are nil, or both are not nil and a.Error() == b.Error().
+func equalError(a, b error) bool {
+	return a == nil && b == nil || a != nil && b != nil && a.Error() == b.Error()
+}
+
 func TestCacheableURL(t *testing.T) {
 	tests := []struct {
 		v    string