diff --git a/src/wp-includes/class-wp-textdomain-registry.php b/src/wp-includes/class-wp-textdomain-registry.php
index 113ef3bd65..fe6d04b0a1 100644
--- a/src/wp-includes/class-wp-textdomain-registry.php
+++ b/src/wp-includes/class-wp-textdomain-registry.php
@@ -183,8 +183,8 @@ class WP_Textdomain_Registry {
 			return $files;
 		}
 
-		$cache_key = 'cached_mo_files_' . md5( $path );
-		$files     = wp_cache_get( $cache_key, 'translations' );
+		$cache_key = md5( $path );
+		$files     = wp_cache_get( $cache_key, 'translation_files' );
 
 		if ( false === $files ) {
 			$files = glob( $path . '*.mo' );
@@ -197,7 +197,7 @@ class WP_Textdomain_Registry {
 				$files = array_merge( $files, $php_files );
 			}
 
-			wp_cache_set( $cache_key, $files, 'translations' );
+			wp_cache_set( $cache_key, $files, 'translation_files', HOUR_IN_SECONDS );
 		}
 
 		return $files;
@@ -246,13 +246,13 @@ class WP_Textdomain_Registry {
 		foreach ( $translation_types as $type ) {
 			switch ( $type ) {
 				case 'plugin':
-					wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/plugins/' ), 'translations' );
+					wp_cache_delete( md5( WP_LANG_DIR . '/plugins/' ), 'translation_files' );
 					break;
 				case 'theme':
-					wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/themes/' ), 'translations' );
+					wp_cache_delete( md5( WP_LANG_DIR . '/themes/' ), 'translation_files' );
 					break;
 				default:
-					wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/' ), 'translations' );
+					wp_cache_delete( md5( WP_LANG_DIR . '/' ), 'translation_files' );
 					break;
 			}
 		}
diff --git a/src/wp-includes/load.php b/src/wp-includes/load.php
index 40947a0b20..b7bde142ec 100644
--- a/src/wp-includes/load.php
+++ b/src/wp-includes/load.php
@@ -876,6 +876,7 @@ function wp_start_object_cache() {
 				'site-queries',
 				'site-transient',
 				'theme_files',
+				'translation_files',
 				'rss',
 				'users',
 				'user-queries',
diff --git a/tests/phpunit/tests/l10n/wpTextdomainRegistry.php b/tests/phpunit/tests/l10n/wpTextdomainRegistry.php
index dd9688e947..0344fe6caf 100644
--- a/tests/phpunit/tests/l10n/wpTextdomainRegistry.php
+++ b/tests/phpunit/tests/l10n/wpTextdomainRegistry.php
@@ -19,10 +19,10 @@ class Tests_L10n_wpTextdomainRegistry extends WP_UnitTestCase {
 	}
 
 	public function tear_down() {
-		wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/foobar/' ), 'translations' );
-		wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/plugins/' ), 'translations' );
-		wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/themes/' ), 'translations' );
-		wp_cache_delete( 'cached_mo_files_' . md5( WP_LANG_DIR . '/' ), 'translations' );
+		wp_cache_delete( md5( WP_LANG_DIR . '/foobar/' ), 'translation_files' );
+		wp_cache_delete( md5( WP_LANG_DIR . '/plugins/' ), 'translation_files' );
+		wp_cache_delete( md5( WP_LANG_DIR . '/themes/' ), 'translation_files' );
+		wp_cache_delete( md5( WP_LANG_DIR . '/' ), 'translation_files' );
 
 		parent::tear_down();
 	}
@@ -49,7 +49,7 @@ class Tests_L10n_wpTextdomainRegistry extends WP_UnitTestCase {
 			'Custom path for textdomain not returned'
 		);
 		$this->assertNotFalse(
-			wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/bar/' ), 'translations' ),
+			wp_cache_get( md5( WP_LANG_DIR . '/bar/' ), 'translation_files' ),
 			'List of files in custom path not cached'
 		);
 	}
@@ -89,10 +89,10 @@ class Tests_L10n_wpTextdomainRegistry extends WP_UnitTestCase {
 		$this->instance->get_language_files_from_path( WP_LANG_DIR . '/themes/' );
 		$this->instance->get_language_files_from_path( WP_LANG_DIR . '/' );
 
-		$this->assertNotFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/plugins/' ), 'translations' ) );
-		$this->assertNotFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/themes/' ), 'translations' ) );
-		$this->assertNotFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/foobar/' ), 'translations' ) );
-		$this->assertNotFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/' ), 'translations' ) );
+		$this->assertNotFalse( wp_cache_get( md5( WP_LANG_DIR . '/plugins/' ), 'translation_files' ) );
+		$this->assertNotFalse( wp_cache_get( md5( WP_LANG_DIR . '/themes/' ), 'translation_files' ) );
+		$this->assertNotFalse( wp_cache_get( md5( WP_LANG_DIR . '/foobar/' ), 'translation_files' ) );
+		$this->assertNotFalse( wp_cache_get( md5( WP_LANG_DIR . '/' ), 'translation_files' ) );
 	}
 
 	/**
@@ -103,7 +103,7 @@ class Tests_L10n_wpTextdomainRegistry extends WP_UnitTestCase {
 		$result = $this->instance->get_language_files_from_path( WP_LANG_DIR . '/plugins/' );
 		remove_filter( 'pre_get_language_files_from_path', '__return_empty_array' );
 
-		$cache = wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/plugins/' ), 'translations' );
+		$cache = wp_cache_get( md5( WP_LANG_DIR . '/plugins/' ), 'translation_files' );
 
 		$this->assertEmpty( $result );
 		$this->assertFalse( $cache );
@@ -144,9 +144,9 @@ class Tests_L10n_wpTextdomainRegistry extends WP_UnitTestCase {
 			)
 		);
 
-		$this->assertFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/plugins/' ), 'translations' ) );
-		$this->assertFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/themes/' ), 'translations' ) );
-		$this->assertFalse( wp_cache_get( 'cached_mo_files_' . md5( WP_LANG_DIR . '/' ), 'translations' ) );
+		$this->assertFalse( wp_cache_get( md5( WP_LANG_DIR . '/plugins/' ), 'translation_files' ) );
+		$this->assertFalse( wp_cache_get( md5( WP_LANG_DIR . '/themes/' ), 'translation_files' ) );
+		$this->assertFalse( wp_cache_get( md5( WP_LANG_DIR . '/' ), 'translation_files' ) );
 	}
 
 	public function data_domains_locales() {