update userguide
diff --git a/user_guide_src/source/libraries/caching.rst b/user_guide_src/source/libraries/caching.rst
index 1fc1b5b..a7081ec 100644
--- a/user_guide_src/source/libraries/caching.rst
+++ b/user_guide_src/source/libraries/caching.rst
@@ -66,7 +66,7 @@
 		hosting environment.
 		::
 
-			if ($this->cache->apc->is_supported()
+			if ($this->cache->apc->is_supported())
 			{
 				if ($data = $this->cache->apc->get('my_cache'))
 				{