diff --git a/src/RequestMatcher.php b/src/RequestMatcher.php
index f9028a8..a47b2da 100644
--- a/src/RequestMatcher.php
+++ b/src/RequestMatcher.php
@@ -328,7 +328,7 @@ public function match(Request $request = NULL) {
         }
       }
       if (empty($site)) {
-        throw new RequestMatchException("Unable to match a site domain.");
+        throw new RequestMatchException("Unable to match a site domain to (".$host.")");
       }
     }
     putenv('SITE=' . $site);