diff --git a/src/Core/Cache.php b/src/Core/Cache.php
index a1b1ecb9c1..3f2edd2e20 100644
--- a/src/Core/Cache.php
+++ b/src/Core/Cache.php
@@ -12,14 +12,14 @@ use Friendica\Core\Config;
  */
 class Cache extends \Friendica\BaseObject
 {
-	const MONTH        = 0;
-	const WEEK         = 1;
-	const DAY          = 2;
-	const HOUR         = 3;
-	const HALF_HOUR    = 4;
-	const QUARTER_HOUR = 5;
-	const FIVE_MINUTES = 6;
-	const MINUTE       = 7;
+	const MONTH        = 2592000;
+	const WEEK         = 604800;
+	const DAY          = 86400;
+	const HOUR         = 3600;
+	const HALF_HOUR    = 1800;
+	const QUARTER_HOUR = 900;
+	const FIVE_MINUTES = 300;
+	const MINUTE       = 60;
 
 	/**
 	 * @var Cache\ICacheDriver
@@ -45,45 +45,6 @@ class Cache extends \Friendica\BaseObject
 		}
 	}
 
-	/**
-	 * @brief Return the duration for a given cache level
-	 *
-	 * @param integer $level Cache level
-	 *
-	 * @return integer The cache duration in seconds
-	 */
-	public static function duration($level)
-	{
-		switch ($level) {
-			case self::MONTH:
-				$seconds = 2592000;
-				break;
-			case self::WEEK:
-				$seconds = 604800;
-				break;
-			case self::DAY:
-				$seconds = 86400;
-				break;
-			case self::HOUR:
-				$seconds = 3600;
-				break;
-			case self::HALF_HOUR:
-				$seconds = 1800;
-				break;
-			case self::QUARTER_HOUR:
-				$seconds = 900;
-				break;
-			case self::FIVE_MINUTES:
-				$seconds = 300;
-				break;
-			case self::MINUTE:
-			default:
-				$seconds = 60;
-				break;
-		}
-		return $seconds;
-	}
-
 	/**
 	 * Returns the current cache driver
 	 *
diff --git a/src/Core/Cache/DatabaseCacheDriver.php b/src/Core/Cache/DatabaseCacheDriver.php
index 9703208d7b..17ae310074 100644
--- a/src/Core/Cache/DatabaseCacheDriver.php
+++ b/src/Core/Cache/DatabaseCacheDriver.php
@@ -37,7 +37,7 @@ class DatabaseCacheDriver implements ICacheDriver
 	{
 		$fields = [
 			'v'       => serialize($value),
-			'expires' => DateTimeFormat::utc('now + ' . Cache::duration($duration) . ' seconds'),
+			'expires' => DateTimeFormat::utc('now + ' . $duration . ' seconds'),
 			'updated' => DateTimeFormat::utcNow()
 		];
 
diff --git a/src/Core/Cache/MemcacheCacheDriver.php b/src/Core/Cache/MemcacheCacheDriver.php
index 03fc075f4b..563447ef1e 100644
--- a/src/Core/Cache/MemcacheCacheDriver.php
+++ b/src/Core/Cache/MemcacheCacheDriver.php
@@ -61,7 +61,7 @@ class MemcacheCacheDriver extends BaseObject implements ICacheDriver
 			self::getApp()->get_hostname() . ":" . $key,
 			serialize($value),
 			MEMCACHE_COMPRESSED,
-			Cache::duration($duration)
+			time() + $duration
 		);
 	}
 
diff --git a/src/Core/Cache/MemcachedCacheDriver.php b/src/Core/Cache/MemcachedCacheDriver.php
index 8f1752cbed..1a8bdc9503 100644
--- a/src/Core/Cache/MemcachedCacheDriver.php
+++ b/src/Core/Cache/MemcachedCacheDriver.php
@@ -52,7 +52,7 @@ class MemcachedCacheDriver extends BaseObject implements ICacheDriver
 		return $this->memcached->set(
 			self::getApp()->get_hostname() . ":" . $key,
 			$value,
-			Cache::duration($duration)
+			time() + $duration
 		);
 	}