diff --git a/src/intrusive_queue.h b/src/intrusive_queue.h
index 6889d784..69a530d9 100644
--- a/src/intrusive_queue.h
+++ b/src/intrusive_queue.h
@@ -40,6 +40,8 @@ SOFTWARE.
 #include "intrusive_links.h"
 #include "private/counter_type.h"
 
+#define ETL_FILE "29"
+
 namespace etl
 {
   //***************************************************************************
@@ -253,4 +255,6 @@ namespace etl
   };
 }
 
+#undef ETL_FILE
+
 #endif
diff --git a/src/intrusive_stack.h b/src/intrusive_stack.h
index 0fc0cb61..787f2dba 100644
--- a/src/intrusive_stack.h
+++ b/src/intrusive_stack.h
@@ -38,6 +38,8 @@ SOFTWARE.
 #include "intrusive_links.h"
 #include "private/counter_type.h"
 
+#define ETL_FILE "28"
+
 namespace etl
 {
   //***************************************************************************
@@ -95,7 +97,7 @@ namespace etl
     {
       // The count option is based on the type of link.
       COUNT_OPTION = ((TLink::OPTION == etl::link_option::AUTO) || (TLink::OPTION == etl::link_option::CHECKED)) ?
-                     etl::count_option::SLOW_COUNT : 
+                     etl::count_option::SLOW_COUNT :
                      etl::count_option::FAST_COUNT
     };
 
@@ -136,7 +138,7 @@ namespace etl
       {
         etl::link(value, p_top);
       }
-        
+
       p_top = &value;
 
       ++current_size;
@@ -217,4 +219,6 @@ namespace etl
   };
 }
 
+#undef ETL_FILE
+
 #endif