diff --git a/src/backend/backend.c b/src/backend/backend.c
index 623b5d448..87992dfb3 100644
--- a/src/backend/backend.c
+++ b/src/backend/backend.c
@@ -35,6 +35,9 @@ NOBUG_DEFINE_FLAG (backend);
 NOBUG_DEFINE_FLAG_PARENT (file_all, backend);
 NOBUG_DEFINE_FLAG_PARENT (filehandle, file_all);
 
+NOBUG_DEFINE_FLAG_PARENT (mmapings, mmap_all);
+
+
 
 NOBUG_DECLARE_FLAG (file);
 
diff --git a/src/backend/mmapings.c b/src/backend/mmapings.c
index 67bb866b9..3193b67a9 100644
--- a/src/backend/mmapings.c
+++ b/src/backend/mmapings.c
@@ -32,8 +32,6 @@
  *
  */
 
-NOBUG_DEFINE_FLAG_PARENT (mmapings, mmap_all);
-
 
 LumieraMMapings
 lumiera_mmapings_init (LumieraMMapings self, LumieraFile file, size_t chunksize)
diff --git a/src/backend/mmapings.h b/src/backend/mmapings.h
index 26ed42ac2..77bfbffad 100644
--- a/src/backend/mmapings.h
+++ b/src/backend/mmapings.h
@@ -33,6 +33,7 @@ typedef lumiera_mmapings* LumieraMMapings;
 
 #include <nobug.h>
 
+NOBUG_DECLARE_FLAG (mmapings);
 
 /**
  * @file