diff --git a/examples/component-prerequisites/resources/configmap_test.go b/examples/component-prerequisites/resources/configmap_test.go
index 84c99744..44267b11 100644
--- a/examples/component-prerequisites/resources/configmap_test.go
+++ b/examples/component-prerequisites/resources/configmap_test.go
@@ -34,6 +34,9 @@ func TestConfigMapShape(t *testing.T) {
 	res, err := resources.NewConfigMapResource(owner)
 	require.NoError(t, err)
 
-	golden.AssertYAML(t, "testdata/configmap.yaml", res.(golden.Previewer),
+	previewer, ok := res.(golden.Previewer)
+	require.True(t, ok)
+
+	golden.AssertYAML(t, "testdata/configmap.yaml", previewer,
 		golden.WithScheme(scheme), golden.Update(*update))
 }
diff --git a/examples/component-prerequisites/resources/deployment_test.go b/examples/component-prerequisites/resources/deployment_test.go
index 396ddea5..57aaa448 100644
--- a/examples/component-prerequisites/resources/deployment_test.go
+++ b/examples/component-prerequisites/resources/deployment_test.go
@@ -62,7 +62,10 @@ func TestDeploymentShape(t *testing.T) {
 			res, err := resources.NewDeploymentResource(owner)
 			require.NoError(t, err)
 
-			golden.AssertYAML(t, tt.golden, res.(golden.Previewer),
+			previewer, ok := res.(golden.Previewer)
+			require.True(t, ok)
+
+			golden.AssertYAML(t, tt.golden, previewer,
 				golden.WithScheme(scheme), golden.Update(*update))
 		})
 	}
diff --git a/examples/custom-resource/resources/certificate_test.go b/examples/custom-resource/resources/certificate_test.go
index fed35b59..3928b312 100644
--- a/examples/custom-resource/resources/certificate_test.go
+++ b/examples/custom-resource/resources/certificate_test.go
@@ -49,7 +49,10 @@ func TestCertificateShape(t *testing.T) {
 	res, err := resources.NewCertificateResource(testOwner())
 	require.NoError(t, err)
 
-	golden.AssertYAML(t, "testdata/certificate.yaml", res.(golden.Previewer), golden.Update(*update))
+	previewer, ok := res.(golden.Previewer)
+	require.True(t, ok)
+
+	golden.AssertYAML(t, "testdata/certificate.yaml", previewer, golden.Update(*update))
 }
 
 // TestCertificateBaseShape pins the bare base object before any mutations.
diff --git a/examples/extraction-and-guards/resources/configmap_test.go b/examples/extraction-and-guards/resources/configmap_test.go
index 120c2609..917301a3 100644
--- a/examples/extraction-and-guards/resources/configmap_test.go
+++ b/examples/extraction-and-guards/resources/configmap_test.go
@@ -37,6 +37,9 @@ func TestConfigMapShape(t *testing.T) {
 	res, err := resources.NewConfigMapResource(owner, dbHost)
 	require.NoError(t, err)
 
-	golden.AssertYAML(t, "testdata/configmap.yaml", res.(golden.Previewer),
+	previewer, ok := res.(golden.Previewer)
+	require.True(t, ok)
+
+	golden.AssertYAML(t, "testdata/configmap.yaml", previewer,
 		golden.WithScheme(scheme), golden.Update(*update))
 }
diff --git a/examples/extraction-and-guards/resources/secret_test.go b/examples/extraction-and-guards/resources/secret_test.go
index 7bcd027c..f0015bfe 100644
--- a/examples/extraction-and-guards/resources/secret_test.go
+++ b/examples/extraction-and-guards/resources/secret_test.go
@@ -26,6 +26,9 @@ func TestSecretShape(t *testing.T) {
 	res, err := resources.NewSecretResource(owner, dbHost)
 	require.NoError(t, err)
 
-	golden.AssertYAML(t, "testdata/secret.yaml", res.(golden.Previewer),
+	previewer, ok := res.(golden.Previewer)
+	require.True(t, ok)
+
+	golden.AssertYAML(t, "testdata/secret.yaml", previewer,
 		golden.WithScheme(scheme), golden.Update(*update))
 }
diff --git a/examples/grace-inconsistency/resources/deployment_test.go b/examples/grace-inconsistency/resources/deployment_test.go
index 9e279a08..1b6e1204 100644
--- a/examples/grace-inconsistency/resources/deployment_test.go
+++ b/examples/grace-inconsistency/resources/deployment_test.go
@@ -38,6 +38,9 @@ func TestDeploymentShape(t *testing.T) {
 	res, err := resources.NewDeploymentResource(owner)
 	require.NoError(t, err)
 
-	golden.AssertYAML(t, "testdata/deployment.yaml", res.(golden.Previewer),
+	previewer, ok := res.(golden.Previewer)
+	require.True(t, ok)
+
+	golden.AssertYAML(t, "testdata/deployment.yaml", previewer,
 		golden.WithScheme(testScheme()), golden.Update(*update))
 }