diff --git a/id_stage.sv b/id_stage.sv
index c78528d5..76d805a4 100644
--- a/id_stage.sv
+++ b/id_stage.sv
@@ -174,6 +174,7 @@ module id_stage
   logic [31:0] imm_sb_type;
   logic [31:0] imm_u_type;
   logic [31:0] imm_uj_type;
+  logic [31:0] imm_z_type;
 
   logic [31:0] immediate_b;       // contains the immediate for operand b