diff --git a/include/etl/basic_string.h b/include/etl/basic_string.h
index 4d91c25b..a30b15f4 100644
--- a/include/etl/basic_string.h
+++ b/include/etl/basic_string.h
@@ -1927,7 +1927,8 @@ namespace etl
     void initialise()
     {
       current_size = 0;
-      p_buffer[0] = 0;
+      p_buffer[0]  = 0;
+      is_truncated = false;
     }
 
     //*************************************************************************