diff --git a/includes/class-options-general.php b/includes/class-options-general.php
index bfd6f82..2d1d371 100644
--- a/includes/class-options-general.php
+++ b/includes/class-options-general.php
@@ -150,7 +150,7 @@ public function core_version_check_locale( $wp_locale ) {
 			$locale = Translations_API::locale( $wp_locale );
 
 			// If the current locale has no Language Packs, set the core update to default 'en_US'.
-			if ( ! isset( $locale->translations ) ) {
+			if ( is_null( $locale->translations ) ) {
 				$wp_locale = 'en_US';
 			}
 
@@ -193,7 +193,7 @@ public function settings_language_field_description() {
 				// Get the formated Locale name.
 				$formated_name = self::locale_name_format( $locale );
 
-				if ( isset( $locale->translations ) ) {
+				if ( ! is_null( $locale->translations ) ) {
 					// Format Locale name.
 					$locales_with_lang_packs[] = $formated_name;
 				} else {
diff --git a/includes/class-site-health-test-wordpress-translations-locale.php b/includes/class-site-health-test-wordpress-translations-locale.php
index 151f86e..e2c9733 100644
--- a/includes/class-site-health-test-wordpress-translations-locale.php
+++ b/includes/class-site-health-test-wordpress-translations-locale.php
@@ -90,7 +90,7 @@ public function run_test() {
 			$translation_project_version = Translations_API::major_version( $translation_project['data']->name );
 
 			// Get translation project major version.
-			if ( isset( $locale->translations ) ) {
+			if ( ! is_null( $locale->translations ) ) {
 				$locale_translations_version = Translations_API::major_version( $locale->translations['version'] );
 			}
 
@@ -98,7 +98,7 @@ public function run_test() {
 			$formated_name = Options_General::locale_name_format( $locale );
 
 			// Check if Language Packs exist for the Locale and if the Language Pack major version is the same as the WordPress installed major version.
-			if ( isset( $locale->translations ) && isset( $locale_translations_version ) && $translation_project_version === $locale_translations_version ) {
+			if ( ! is_null( $locale->translations ) && isset( $locale_translations_version ) && $translation_project_version === $locale_translations_version ) {
 
 				$this->test_status = self::TRANSLATION_TOOLS_SITE_HEALTH_STATUS_GOOD;
 				$this->test_label  = sprintf(
diff --git a/includes/class-site-health.php b/includes/class-site-health.php
index 6262f7b..6f1877f 100644
--- a/includes/class-site-health.php
+++ b/includes/class-site-health.php
@@ -86,11 +86,11 @@ public static function locale_lang_pack_status( $wp_locale ) {
 
 			if ( 'en_US' === $wp_locale ) {
 
-				$locale = esc_html__( 'WordPress default language, has no translation.', 'translation-tools' );
+				return esc_html__( 'WordPress default language, has no translation.', 'translation-tools' );
 
-			} elseif ( isset( $locale->translations ) ) {
+			} elseif ( ! is_null( $locale->translations ) ) {
 
-				$locale = sprintf(
+				return sprintf(
 					/* translators: %s: Locale name. */
 					esc_html__( '%s has Language Packs.', 'translation-tools' ),
 					$formated_name
@@ -98,15 +98,13 @@ public static function locale_lang_pack_status( $wp_locale ) {
 
 			} else {
 
-				$locale = sprintf(
+				return sprintf(
 					/* translators: %s: Locale name. */
 					esc_html__( '%s has no Language Packs.', 'translation-tools' ),
 					$formated_name
 				);
 
 			}
-
-			return $locale;
 		}
 	}
 
diff --git a/includes/class-update-core.php b/includes/class-update-core.php
index 4b4024c..2153e1d 100644
--- a/includes/class-update-core.php
+++ b/includes/class-update-core.php
@@ -271,7 +271,7 @@ public function update_core_bottom_section_content() {
 
 				foreach ( $locales as $locale ) {
 
-					if ( isset( $locale->translations ) ) {
+					if ( ! is_null( $locale->translations ) ) {
 						$locale_translations_version = Translations_API::major_version( $locale->translations['version'] );
 					}
 
@@ -279,7 +279,7 @@ public function update_core_bottom_section_content() {
 					$formated_name = Options_General::locale_name_format( $locale );
 
 					// Check if Language Packs exist for the Locale and if the Language Pack major version is the same as the WordPress installed major version.
-					if ( isset( $locale->translations ) && isset( $locale_translations_version ) && $translation_project_version === $locale_translations_version ) {
+					if ( ! is_null( $locale->translations ) && isset( $locale_translations_version ) && $translation_project_version === $locale_translations_version ) {
 
 						$notice_messages[] = sprintf(
 							wp_kses_post(