diff --git a/source/bubel/ecs/manager.d b/source/bubel/ecs/manager.d
index 0977786..b5220f4 100644
--- a/source/bubel/ecs/manager.d
+++ b/source/bubel/ecs/manager.d
@@ -27,6 +27,8 @@ alias SerializeVector = bubel.ecs.vector.Vector!ubyte;
 ///Global EntityManager used for everything.
 export __gshared EntityManager* gEntityManager = null;
 
+version(D_BetterC) version = NoDRuntime;
+
 /************************************************************************************************************************
 Entity manager is responsible for everything.
 
@@ -359,7 +361,7 @@ export struct EntityManager
     void registerSystem(Sys)(int priority, const(char)[] pass_name)
     {
         ushort pass = passes_map.get(pass_name, ushort.max);
-        version (D_BetterC)
+        version (NoDRuntime)
             assert(pass != ushort.max, "Update pass doesn't exist.");
         else
             assert(pass != ushort.max, "Update pass (Name " ~ pass_name ~ ") doesn't exist.");
@@ -381,7 +383,7 @@ export struct EntityManager
 
         assert(register_state,
             "registerSystem must be called between beginRegister() and endRegister().");
-        version (D_BetterC)
+        version (NoDRuntime)
             assert(pass < passes.length, "Update pass doesn't exist.");
         else
             assert(pass < passes.length, "Update pass (ID " ~ pass.to!string ~ ") doesn't exist.");
@@ -390,7 +392,7 @@ export struct EntityManager
         enum SystemName = fullName!Sys;
         //enum SystemName = Sys.stringof;
 
-        System system;
+        System system = System();
         system.m_pass = pass;
 
         // static if (!(hasMember!(Sys, "system_id")) || !is(typeof(Sys.system_id) == ushort))
@@ -840,7 +842,7 @@ export struct EntityManager
             foreach (iii, comp_info; components_info.req)
             {
                 ushort comp = components_map.get(cast(char[]) comp_info.type, ushort.max);
-                version (D_BetterC)
+                version (NoDRuntime)
                     assert(comp != ushort.max,
                         "Can't register system \"" ~ SystemName
                             ~ "\" due to non existing component.");
@@ -852,7 +854,7 @@ export struct EntityManager
             foreach (iii, comp_info; components_info.excluded)
             {
                 ushort comp = components_map.get(cast(char[]) comp_info.type, ushort.max);
-                version (D_BetterC)
+                version (NoDRuntime)
                     assert(comp != ushort.max,
                         "Can't register system \"" ~ SystemName
                             ~ "\" due to non existing component.");
@@ -864,7 +866,7 @@ export struct EntityManager
             foreach (iii, comp_info; components_info.optional)
             {
                 ushort comp = components_map.get(cast(char[]) comp_info.type, ushort.max);
-                version (D_BetterC)
+                version (NoDRuntime)
                     assert(comp != ushort.max,
                         "Can't register system \"" ~ SystemName
                             ~ "\" due to non existing component.");
@@ -876,7 +878,7 @@ export struct EntityManager
             foreach (iii, comp_info; components_info.readonly)
             {
                 ushort comp = components_map.get(cast(char[]) comp_info.type, ushort.max);
-                version (D_BetterC)
+                version (NoDRuntime)
                     assert(comp != ushort.max,
                         "Can't register system \"" ~ SystemName
                             ~ "\" due to non existing component.");
@@ -888,7 +890,7 @@ export struct EntityManager
             foreach (iii, comp_info; components_info.mutable)
             {
                 ushort comp = components_map.get(cast(char[]) comp_info.type, ushort.max);
-                version (D_BetterC)
+                version (NoDRuntime)
                     assert(comp != ushort.max,
                         "Can't register system \"" ~ SystemName
                             ~ "\" due to non existing component.");
@@ -1198,7 +1200,7 @@ export struct EntityManager
         {
             ushort comp = external_dependencies_map.get(cast(const(char)[]) comp_info.type,
                 ushort.max);
-            version (D_BetterC)
+            version (NoDRuntime)
                 assert(comp != ushort.max,
                     "Can't register system \"" ~ SystemName
                         ~ "\" due to non existing dependency.");
@@ -1211,7 +1213,7 @@ export struct EntityManager
         foreach (iii, comp_info; components_info.writableDeps)
         {
             ushort comp = external_dependencies_map.get(cast(char[]) comp_info.type, ushort.max);
-            version (D_BetterC)
+            version (NoDRuntime)
                 assert(comp != ushort.max,
                     "Can't register system \"" ~ SystemName
                         ~ "\" due to non existing dependency.");