diff --git a/bericht/rt_folgen.txt b/bericht/rt_folgen.txt
index bbb7c43..2d33220 100644
--- a/bericht/rt_folgen.txt
+++ b/bericht/rt_folgen.txt
@@ -113,21 +113,22 @@
 |                                 | DIV_4         |
 |---------------------------------+---------------|
 
-|---------------------------+---------------|
-| ALU_RES -> BUS_A -> X     | N/A           |
-| ALU_RES -> BUS_A -> ALU_A | SUB - C: SET  |
-| OLD_X -> BUS_B -> ALU_B   | OLD_X_LTE_X_2 |
-|                           | OLD_X_LTE_X_1 |
-|---------------------------+---------------|
 
-|---------------------+-----------------|
-| X -> BUS_A -> OLD_X | N/A             |
-|                     | N/A             |
-|                     | BC:             |
-|                     | -> C=1: DIV_1   |
-|                     | -> C=0: STORE_X |
-|                     | OLD_X_LTE_X_2   |
-|---------------------+-----------------|
+|---------------------------+----------------------|
+| ALU_RES -> BUS_A -> X     | N/A                  |
+| ALU_RES -> BUS_A -> ALU_A | SUB - C: SET, Z: SET |
+| OLD_X   -> BUS_B -> ALU_B | OLD_X_LTE_X_2        |
+|                           | OLD_X_LTE_X_1        | :
+|---------------------------+----------------------|
+
+|---------------------+------------------------|
+| X -> BUS_A -> OLD_X | N/A                    |
+|                     | N/A                    |
+|                     | BC:                    |
+|                     | -> C=1 or Z=1: STORE_X |
+|                     | -> C=0: DIV_1          |
+|                     | OLD_X_LTE_X_2          |
+|---------------------+------------------------|
 
 |----------------------------+---------|
 | X (shifted) -> BUS_A -> DO | DW      |
diff --git a/cadence/heron_ctrl/functional/verilog.v b/cadence/heron_ctrl/functional/verilog.v
index 6e8a889..044bc16 100644
--- a/cadence/heron_ctrl/functional/verilog.v
+++ b/cadence/heron_ctrl/functional/verilog.v
@@ -89,10 +89,14 @@ module heron_ctrl(
         div_to_b_shift_1 = ON;
       end
       `OLD_X_LTE_X_1: begin
+        alu_mode = MINUS;
+        alu_set_c = ON;
+        alu_set_z = ON;
+
         alu_res_to_a = ON;
         a_to_x = ON;
+
         old_x_to_b = ON;
-        alu_set_c = ON;
       end
       `OLD_X_LTE_X_2: begin
         x_to_a = ON;