diff --git a/model/manifest.go b/model/manifest.go
index b1b3a9237c..e693c19996 100644
--- a/model/manifest.go
+++ b/model/manifest.go
@@ -325,39 +325,43 @@ func (m *Manifest) IsValid() error {
 		return errors.New("invalid plugin ID")
 	}
 
-	if m.HomepageURL == "" || !IsValidHttpUrl(m.HomepageURL) {
+	if m.HomepageURL != "" && !IsValidHttpUrl(m.HomepageURL) {
 		return errors.New("invalid HomepageURL")
 	}
 
-	if m.SupportURL == "" || !IsValidHttpUrl(m.SupportURL) {
+	if m.SupportURL != "" && !IsValidHttpUrl(m.SupportURL) {
 		return errors.New("invalid SupportURL")
 	}
 
 	if m.ReleaseNotesURL != "" && !IsValidHttpUrl(m.ReleaseNotesURL) {
-		return errors.New("invalid SupportURL")
+		return errors.New("invalid ReleaseNotesURL")
 	}
 
-	_, err := semver.Parse(m.Version)
-	if err != nil {
-		return errors.Wrap(err, "failed to parse Version")
+	if m.Version != "" {
+		_, err := semver.Parse(m.Version)
+		if err != nil {
+			return errors.Wrap(err, "failed to parse Version")
+		}
 	}
 
-	_, err2 := semver.Parse(m.MinServerVersion)
-	if err2 != nil {
-		return errors.Wrap(err2, "failed to parse MinServerVersion")
+	if m.MinServerVersion != "" {
+		_, err := semver.Parse(m.MinServerVersion)
+		if err != nil {
+			return errors.Wrap(err, "failed to parse MinServerVersion")
+		}
 	}
 
 	if m.SettingsSchema != nil {
-		err3 := m.SettingsSchema.isValidSchema()
-		if err3 != nil {
-			return errors.Wrap(err3, "invalid settings schema")
+		err := m.SettingsSchema.isValid()
+		if err != nil {
+			return errors.Wrap(err, "invalid settings schema")
 		}
 	}
 
 	return nil
 }
 
-func (s *PluginSettingsSchema) isValidSchema() error {
+func (s *PluginSettingsSchema) isValid() error {
 	for _, setting := range s.Settings {
 		err := setting.isValid()
 		if err != nil {
diff --git a/model/manifest_test.go b/model/manifest_test.go
index cf4b2061d6..adb51bd9ec 100644
--- a/model/manifest_test.go
+++ b/model/manifest_test.go
@@ -32,6 +32,7 @@ func TestIsValid(t *testing.T) {
 		{"SettingSchema error", &Manifest{Id: "com.company.test", HomepageURL: "http://someurl.com", SupportURL: "http://someotherurl.com", Version: "5.10.0", MinServerVersion: "5.10.8", SettingsSchema: &PluginSettingsSchema{
 			Settings: []*PluginSetting{{Type: "Invalid"}},
 		}}, true},
+		{"Minimal valid manifest", &Manifest{Id: "com.company.test"}, false},
 		{"Happy case", &Manifest{
 			Id:               "com.company.test",
 			Name:             "thename",
@@ -46,7 +47,6 @@ func TestIsValid(t *testing.T) {
 			},
 			Webapp: &ManifestWebapp{
 				BundlePath: "thebundlepath",
-				BundleHash: []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
 			},
 			SettingsSchema: &PluginSettingsSchema{
 				Header: "theheadertext",
@@ -94,7 +94,7 @@ func TestIsValidSettingsSchema(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.Title, func(t *testing.T) {
-			err := tc.settingsSchema.isValidSchema()
+			err := tc.settingsSchema.isValid()
 			if tc.ExpectError {
 				assert.Error(t, err)
 			} else {