diff --git a/DDCore/include/DD4hep/DetType.h b/DDCore/include/DD4hep/DetType.h
index ddcbbe679a6631252415be564d0b3521e4577507..fbbdac0df629bebfd3898595f97ac2589359053d 100644
--- a/DDCore/include/DD4hep/DetType.h
+++ b/DDCore/include/DD4hep/DetType.h
@@ -51,8 +51,10 @@ namespace DD4hep {
       ELECTROMAGNETIC = 1 << 11, 
       HADRONIC	   = 1 << 12, 
       MUON	   = 1 << 13, 
-      SUPPORT      = 1 << 14
-    } ;
+      SUPPORT      = 1 << 14,
+      BEAMPIPE     = 1 << 15, 
+      COIL         = 1 << 16 
+   } ;
     
 
     /// default c'tor
@@ -110,6 +112,8 @@ namespace DD4hep {
     if( t.is( DetType::HADRONIC	    ) ) os << "HADRONIC, " ;
     if( t.is( DetType::MUON	    ) ) os << "MUON, " ;
     if( t.is( DetType::SUPPORT      ) ) os << "SUPPORT, " ;
+    if( t.is( DetType::BEAMPIPE     ) ) os << "BEAMPIPE, " ;
+    if( t.is( DetType::COIL         ) ) os << "COIL, " ;
     return os ;
   }