diff --git a/src/#mbtools#cl_logger.clas.abap b/src/#mbtools#cl_logger.clas.abap
index 3358adc..5532582 100644
--- a/src/#mbtools#cl_logger.clas.abap
+++ b/src/#mbtools#cl_logger.clas.abap
@@ -632,7 +632,6 @@ CLASS /mbtools/cl_logger IMPLEMENTATION.
           "these objects could be moved into their own method
           "see adt://***/sap/bc/adt/oo/classes/zcl_logger/source/main#start=391,10;end=415,61
           symsg                    TYPE symsg,
-          syst_buffer              TYPE syst,
           loggable                 TYPE REF TO /mbtools/if_loggable_object,
           loggable_object_messages TYPE /mbtools/if_loggable_object=>tty_messages.
 
@@ -643,7 +642,6 @@ CLASS /mbtools/cl_logger IMPLEMENTATION.
     FIELD-SYMBOLS <exception_data> LIKE LINE OF exception_data_table.
 
     " Remember system message since it might get changed inadvertently
-    syst_buffer = syst.
     IF context IS NOT INITIAL.
       ASSIGN context TO <context_val>.
       formatted_context-value = <context_val>.
@@ -676,9 +674,7 @@ CLASS /mbtools/cl_logger IMPLEMENTATION.
     msg_type    = cl_abap_typedescr=>describe_by_data( obj_to_log ).
     struct_kind = get_struct_kind( msg_type ).
 
-    IF obj_to_log IS INITIAL.
-      detailed_msg = add_syst_msg( syst_buffer ).
-    ELSEIF struct_kind = c_struct_kind-syst.
+    IF struct_kind = c_struct_kind-syst.
       detailed_msg = add_syst_msg( obj_to_log ).
     ELSEIF struct_kind = c_struct_kind-bapi.
       detailed_msg = add_bapi_msg( obj_to_log ).
diff --git a/src/#mbtools#cl_logger.clas.testclasses.abap b/src/#mbtools#cl_logger.clas.testclasses.abap
index ecf26b7..e608adf 100644
--- a/src/#mbtools#cl_logger.clas.testclasses.abap
+++ b/src/#mbtools#cl_logger.clas.testclasses.abap
@@ -98,7 +98,8 @@ can_create_anon_log FOR TESTING,
       can_log_bapi_meth_message FOR TESTING RAISING cx_static_check,
       can_log_bapi_status_result FOR TESTING RAISING cx_static_check,
       can_log_detlevel FOR TESTING RAISING cx_static_check,
-      can_log_exception_with_context FOR TESTING RAISING cx_static_check.
+      can_log_exception_with_context FOR TESTING RAISING cx_static_check,
+      nothing_logged_for_empty_obj FOR TESTING RAISING cx_static_check.
 
 ENDCLASS.
 
@@ -2008,4 +2009,24 @@ CLASS lcl_test IMPLEMENTATION.
 
   ENDMETHOD.
 
+  METHOD nothing_logged_for_empty_obj.
+    DATA where_used_list TYPE bapiret2-message ##NEEDED.
+    DATA bapi_msgs TYPE TABLE OF bapiret2.
+    DATA bapi_msg TYPE bapiret2.
+
+    MESSAGE i001(bl) INTO where_used_list
+            WITH 'This should' '*not*' 'be logged'.
+    CLEAR where_used_list.
+
+    anon_log->add( bapi_msgs ).
+    cl_abap_unit_assert=>assert_equals( act = anon_log->length( )
+                                        exp = 0 ).
+    anon_log->add( bapi_msg ).
+    cl_abap_unit_assert=>assert_equals( act = anon_log->length( )
+                                        exp = 0 ).
+    anon_log->add( where_used_list ).
+    cl_abap_unit_assert=>assert_equals( act = anon_log->length( )
+                                        exp = 0 ).
+  ENDMETHOD.
+
 ENDCLASS.
diff --git a/src/#mbtools#if_logger.intf.abap b/src/#mbtools#if_logger.intf.abap
index 1849c6d..5ce7acb 100644
--- a/src/#mbtools#if_logger.intf.abap
+++ b/src/#mbtools#if_logger.intf.abap
@@ -7,7 +7,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS add
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL
@@ -22,7 +22,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS a
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL
@@ -36,7 +36,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS e
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL
@@ -50,7 +50,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS w
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL
@@ -64,7 +64,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS i
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL
@@ -78,7 +78,7 @@ INTERFACE /mbtools/if_logger
 
   METHODS s
     IMPORTING
-      obj_to_log          TYPE any OPTIONAL
+      obj_to_log          TYPE any DEFAULT sy
       context             TYPE any OPTIONAL
       callback_form       TYPE csequence OPTIONAL
       callback_prog       TYPE csequence OPTIONAL