diff --git a/cache/stores/memcache/lib.php b/cache/stores/memcache/lib.php
index 1569da6bd80..c71f1080160 100644
--- a/cache/stores/memcache/lib.php
+++ b/cache/stores/memcache/lib.php
@@ -350,7 +350,12 @@ class cachestore_memcache extends cache_store implements cache_is_configurable {
         $lines = explode("\n", $data->servers);
         $servers = array();
         foreach ($lines as $line) {
-            $line = trim($line, ':');
+            // Trim surrounding colons and default whitespace.
+            $line = trim(trim($line), ":");
+            // Skip blank lines.
+            if ($line === '') {
+                continue;
+            }
             $servers[] = explode(':', $line, 3);
         }
         return array(
diff --git a/cache/stores/memcached/lib.php b/cache/stores/memcached/lib.php
index 508628e3883..1bce7aab7e1 100644
--- a/cache/stores/memcached/lib.php
+++ b/cache/stores/memcached/lib.php
@@ -374,7 +374,12 @@ class cachestore_memcached extends cache_store implements cache_is_configurable
         $lines = explode("\n", $data->servers);
         $servers = array();
         foreach ($lines as $line) {
-            $line = trim($line, ':');
+            // Trim surrounding colons and default whitespace.
+            $line = trim(trim($line), ":");
+            // Skip blank lines.
+            if ($line === '') {
+                continue;
+            }
             $servers[] = explode(':', $line, 3);
         }
         return array(