diff --git a/src/register/hei_register.hpp b/src/register/hei_register.hpp
index 1f69cb2..6c1f1a9 100644
--- a/src/register/hei_register.hpp
+++ b/src/register/hei_register.hpp
@@ -27,7 +27,7 @@
 class Register
 {
   public: // Aliases
-    using Ptr      = std::shared_ptr<Register>;
+    using Ptr = std::shared_ptr<Register>;
     using ConstPtr = std::shared_ptr<const Register>;
 
   public: