diff --git a/web/handler.go b/web/handler.go
index 2a299c9..fb3b063 100644
--- a/web/handler.go
+++ b/web/handler.go
@@ -21,7 +21,7 @@ import (
 
 var (
 	// Precompile regex
-	validPath = regexp.MustCompile("^/[a-z0-9@_-]*$")
+	validPath = regexp.MustCompile("^/[a-zA-Z0-9@_-]*$")
 
 	counterMutex     = new(sync.Mutex)
 	connectedClients = make(map[string]map[string]int64)