diff --git a/hub/columns/stack.lisp b/hub/columns/stack.lisp
index 613839e7..36a430f7 100644
--- a/hub/columns/stack.lisp
+++ b/hub/columns/stack.lisp
@@ -49,8 +49,6 @@
    ;; stack popping / pushing parameters
    ( ALPHA                   :byte )
    ( DELTA                   :byte )
-   ( NB_REMOVED              :byte )
-   ( NB_ADDED                :byte )
 
    ;; jump and push related
    ( PUSH_VALUE_HI           :i128 )
diff --git a/hub/lookups/hub_into_instruction_decoder.lisp b/hub/lookups/hub_into_instruction_decoder.lisp
index ab343f27..87eb77e3 100644
--- a/hub/lookups/hub_into_instruction_decoder.lisp
+++ b/hub/lookups/hub_into_instruction_decoder.lisp
@@ -14,8 +14,6 @@
 	     instdecoder.STATIC_FLAG
 	     instdecoder.ALPHA
 	     instdecoder.DELTA
-	     instdecoder.NB_REMOVED
-	     instdecoder.NB_ADDED  
 	     ;;
 	     instdecoder.FAMILY_ACCOUNT
 	     instdecoder.FAMILY_ADD
@@ -58,8 +56,6 @@
 	     (* hub.stack/STATIC_FLAG                 (hub-into-instruction-decoder-trigger))
 	     (* hub.stack/ALPHA                       (hub-into-instruction-decoder-trigger))
 	     (* hub.stack/DELTA                       (hub-into-instruction-decoder-trigger))
-	     (* hub.stack/NB_REMOVED                  (hub-into-instruction-decoder-trigger))
-	     (* hub.stack/NB_ADDED                    (hub-into-instruction-decoder-trigger))
 	     ;;
 	     (* hub.stack/ACC_FLAG                    (hub-into-instruction-decoder-trigger))
 	     (* hub.stack/ADD_FLAG                    (hub-into-instruction-decoder-trigger))
diff --git a/reftables/inst_decoder.lisp b/reftables/inst_decoder.lisp
index 8bf190ef..303f96fe 100644
--- a/reftables/inst_decoder.lisp
+++ b/reftables/inst_decoder.lisp
@@ -40,8 +40,6 @@
     (FLAG_4                                :binary)
     (ALPHA                                 :byte)
     (DELTA                                 :byte)
-    (NB_ADDED                              :byte)
-    (NB_REMOVED                            :byte)
     (STATIC_GAS                            :i32)
 
     ;;