diff --git a/api/src/Cache.php b/api/src/Cache.php
index ba34282990..c859e0f6a5 100644
--- a/api/src/Cache.php
+++ b/api/src/Cache.php
@@ -769,9 +769,10 @@ class Cache
 if (is_null(Cache::$default_provider))
 {
 	Cache::$default_provider =
-		function_exists('apcu_fetch') && Cache\Apcu::available() ? 'EGroupware\Api\Cache\Apcu' :
-			(function_exists('apc_fetch') && Cache\Apc::available() ? 'EGroupware\Api\Cache\Apc' :
-				'EGroupware\Api\Cache\Files');
+		PHP_SAPI === 'cli' ? 'EGroupware\Api\Cache\Files' :
+			(function_exists('apcu_fetch') && Cache\Apcu::available() ? 'EGroupware\Api\Cache\Apcu' :
+				(function_exists('apc_fetch') && Cache\Apc::available() ? 'EGroupware\Api\Cache\Apc' :
+					'EGroupware\Api\Cache\Files'));
 }
 
 //error_log('Cache::$default_provider='.array2string(Cache::$default_provider));
diff --git a/api/src/Cache/Memcache.php b/api/src/Cache/Memcache.php
index 8523e92d50..d1f3819b0a 100644
--- a/api/src/Cache/Memcache.php
+++ b/api/src/Cache/Memcache.php
@@ -13,6 +13,9 @@
 
 namespace EGroupware\Api\Cache;
 
+// fix warning in tests, if memcache extension not available
+if (defined('MEMCACHE_COMPRESSED')) define('MEMCACHE_COMPRESSED', 2);
+
 /**
  * Caching provider storing data in memcached via PHP's memcache extension
  *