diff --git a/cmd/config/internal/commands/fmt_test.go b/cmd/config/internal/commands/fmt_test.go
index 16ba273899..c0918ac4f5 100644
--- a/cmd/config/internal/commands/fmt_test.go
+++ b/cmd/config/internal/commands/fmt_test.go
@@ -164,7 +164,7 @@ func TestCmd_failFileContents(t *testing.T) {
 	err := r.Command.Execute()
 
 	// expect an error
-	assert.EqualError(t, err, "yaml: line 1: did not find expected node content")
+	assert.EqualError(t, err, "MalformedYAMLError: yaml: line 1: did not find expected node content")
 }
 
 func TestFmtSubPackages(t *testing.T) {
diff --git a/kyaml/kio/filters/fmtr_test.go b/kyaml/kio/filters/fmtr_test.go
index a79e4eb9bd..697b1c6654 100644
--- a/kyaml/kio/filters/fmtr_test.go
+++ b/kyaml/kio/filters/fmtr_test.go
@@ -673,7 +673,7 @@ apiVersion: example.com/v1beta1
 `
 
 	_, err := FormatInput(strings.NewReader(y))
-	assert.EqualError(t, err, "yaml: line 15: found character that cannot start any token")
+	assert.EqualError(t, err, "MalformedYAMLError: yaml: line 15: found character that cannot start any token")
 }
 
 // TestFormatFileOrDirectory_yamlExtFile verifies that FormatFileOrDirectory will format a file