diff --git a/tests/src/Core/Cache/RedisCacheTest.php b/tests/src/Core/Cache/RedisCacheTest.php
index fcedf81e11..adc7bca4d6 100644
--- a/tests/src/Core/Cache/RedisCacheTest.php
+++ b/tests/src/Core/Cache/RedisCacheTest.php
@@ -60,7 +60,7 @@ class RedisCacheTest extends MemoryCacheTest
 		try {
 			$this->cache = new RedisCache($host, $configMock);
 		} catch (Exception $e) {
-			static::markTestSkipped('Redis is not available.');
+			static::markTestSkipped('Redis is not available. Failure: ' . $e->getMessage());
 		}
 		return $this->cache;
 	}
diff --git a/tests/src/Core/Lock/RedisCacheLockTest.php b/tests/src/Core/Lock/RedisCacheLockTest.php
index c373747bdc..10be602c17 100644
--- a/tests/src/Core/Lock/RedisCacheLockTest.php
+++ b/tests/src/Core/Lock/RedisCacheLockTest.php
@@ -64,7 +64,7 @@ class RedisCacheLockTest extends LockTest
 			$cache = new RedisCache($host, $configMock);
 			$lock = new CacheLock($cache);
 		} catch (Exception $e) {
-			static::markTestSkipped('Redis is not available');
+			static::markTestSkipped('Redis is not available. Error: ' . $e->getMessage());
 		}
 
 		return $lock;