diff --git a/src/core/model/object-base.cc b/src/core/model/object-base.cc
index 9ce2e3a3b..9e06b7c19 100644
--- a/src/core/model/object-base.cc
+++ b/src/core/model/object-base.cc
@@ -124,46 +124,46 @@ ObjectBase::ConstructSelf (const AttributeConstructionList &attributes)
                 }
             }              
 
-            {
-              // No matching attribute value so we try to look at the env var.
+          {
+            // No matching attribute value so we try to look at the env var.
 #ifdef HAVE_GETENV
-              char *envVar = getenv ("NS_ATTRIBUTE_DEFAULT");
-              if (envVar != 0)
-                {
-                  std::string env = std::string (envVar);
-                  std::string::size_type cur = 0;
-                  std::string::size_type next = 0;
-                  while (next != std::string::npos)
-                    {
-                      next = env.find (";", cur);
-                      std::string tmp = std::string (env, cur, next-cur);
-                      std::string::size_type equal = tmp.find ("=");
-                      if (equal != std::string::npos)
-                        {
-                          std::string name = tmp.substr (0, equal);
-                          std::string value = tmp.substr (equal+1, tmp.size () - equal - 1);
-                          if (name == tid.GetAttributeFullName (i))
-                            {
-                              if (DoSet (info.accessor, info.checker, StringValue (value)))
-                                {
-                                  NS_LOG_DEBUG ("construct \""<< tid.GetName ()<<"::"<<
-                                                info.name <<"\" from env var");
-                                  break;
-                                }
-                            }
-                        }
-                      cur = next + 1;
-                    }
-                }
+            char *envVar = getenv ("NS_ATTRIBUTE_DEFAULT");
+            if (envVar != 0)
+              {
+                std::string env = std::string (envVar);
+                std::string::size_type cur = 0;
+                std::string::size_type next = 0;
+                while (next != std::string::npos)
+                  {
+                    next = env.find (";", cur);
+                    std::string tmp = std::string (env, cur, next-cur);
+                    std::string::size_type equal = tmp.find ("=");
+                    if (equal != std::string::npos)
+                      {
+                        std::string name = tmp.substr (0, equal);
+                        std::string value = tmp.substr (equal+1, tmp.size () - equal - 1);
+                        if (name == tid.GetAttributeFullName (i))
+                          {
+                            if (DoSet (info.accessor, info.checker, StringValue (value)))
+                              {
+                                NS_LOG_DEBUG ("construct \""<< tid.GetName ()<<"::"<<
+                                              info.name <<"\" from env var");
+                                break;
+                              }
+                          }
+                      }
+                    cur = next + 1;
+                  }
+              }
 #endif /* HAVE_GETENV */
-            }
+          }
 
-            {
-              // No matching attribute value so we try to set the default value.
-              DoSet (info.accessor, info.checker, *info.initialValue);
-              NS_LOG_DEBUG ("construct \""<< tid.GetName ()<<"::"<<
-                            info.name <<"\" from initial value.");
-            }
+          {
+            // No matching attribute value so we try to set the default value.
+            DoSet (info.accessor, info.checker, *info.initialValue);
+            NS_LOG_DEBUG ("construct \""<< tid.GetName ()<<"::"<<
+                          info.name <<"\" from initial value.");
+          }
         }
       tid = tid.GetParent ();
     } while (tid != ObjectBase::GetTypeId ());