diff --git a/inc/Data/Driver/MemcacheCacheDriver.php b/inc/Data/Driver/MemcacheCacheDriver.php
index cba0f1a6..729f5a50 100644
--- a/inc/Data/Driver/MemcacheCacheDriver.php
+++ b/inc/Data/Driver/MemcacheCacheDriver.php
@@ -13,10 +13,12 @@ class MemcachedCacheDriver implements CacheDriver {
 	public function __construct(string $prefix, string $server_uri, int $server_port, int $server_weight) {
 		$this->inner = new \Memcached();
 		if (!$this->inner->setOption(\Memcached::OPT_BINARY_PROTOCOL, true)) {
-			throw new \RuntimeException('Unable to set the memcached protocol!');
+			$err = $this->inner->getResultMessage();
+			throw new \RuntimeException("Unable to set the memcached protocol: '$err'");
 		}
 		if (!$this->inner->setOption(\Memcached::OPT_PREFIX_KEY, $prefix)) {
-			throw new \RuntimeException('Unable to set the memcached prefix!');
+			$err = $this->inner->getResultMessage();
+			throw new \RuntimeException("Unable to set the memcached prefix: '$err'");
 		}
 
 		$maybe_unix_path = self::asUnixSocketPath($server_uri);
@@ -38,11 +40,13 @@ class MemcachedCacheDriver implements CacheDriver {
 		if (!$found_in_curr) {
 			if (!empty($current_servers)) {
 				if ($this->inner->resetServerList()) {
-					throw new \RuntimeException('Unable to reset the memcached server list!');
+					$err = $this->inner->getResultMessage();
+					throw new \RuntimeException("Unable to reset the memcached server list: '$err'");
 				}
 			}
 			if ($this->inner->addServer($server_uri, $server_port, $server_weight)) {
-				throw new \RuntimeException('Unable to add memcached servers!');
+				$err = $this->inner->getResultMessage();
+				throw new \RuntimeException("Unable to add memcached servers: '$err'");
 			}
 		}
 	}