diff --git a/CMakeLists.txt b/CMakeLists.txt
index daf03d8..68008f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.20)
 include(cmake/color.cmake)
-set(BLT_VERSION 0.18.22)
+set(BLT_VERSION 0.18.23)
 set(BLT_TEST_VERSION 0.0.1)
 
 set(BLT_TARGET BLT)
diff --git a/include/blt/std/meta.h b/include/blt/std/meta.h
index 828819c..b21408c 100644
--- a/include/blt/std/meta.h
+++ b/include/blt/std/meta.h
@@ -47,12 +47,18 @@ namespace blt::meta
     };
     
     template<typename TheLambda, typename IReturn, typename IClass, typename... LArgs>
-    struct lambda_helper<TheLambda, IReturn(IClass::*)(LArgs...)>
+    struct lambda_helper<TheLambda, IReturn (IClass::*)(LArgs...) const>
     {
         using Lambda = TheLambda;
         using Return = IReturn;
         using Class = IClass;
         using Args = arg_helper<LArgs...>;
+        
+        template<typename T>
+        explicit lambda_helper(T)
+        {}
+        
+        lambda_helper() = default;
     };
     
     template<typename Lambda>