diff --git a/lib/CPUs/MIPS/src/core/mips_top.vhd b/lib/CPUs/MIPS/src/core/mips_top.vhd
index a8af971..9533f44 100644
--- a/lib/CPUs/MIPS/src/core/mips_top.vhd
+++ b/lib/CPUs/MIPS/src/core/mips_top.vhd
@@ -83,7 +83,6 @@ architecture rtl of mips_top is
 		dmem_dout	: out word_t;
 		cop_ir		: out word_t;
 		cop_ir_en	: out STD_LOGIC;
-		cop_reg_rd	: in  STD_LOGIC;
 		cop_din		: in  word_t;
 		cop_dout	: out word_t;
 		c0_ctrl_out	: out cop0_ctrl_in_t;
@@ -109,7 +108,6 @@ architecture rtl of mips_top is
 
 	signal pipe_cop_ir		: word_t;
 	signal pipe_cop_ir_en	: STD_LOGIC;
-	signal pipe_cop_reg_rd	: STD_LOGIC;
 	signal pipe_cop_din		: word_t;
 	signal pipe_cop_dout	: word_t;
 	signal pipe_c0_ctrl_out	: cop0_ctrl_in_t;
@@ -134,7 +132,6 @@ architecture rtl of mips_top is
 		ir			: in  word_t;
 		ctrl_in		: in  cop0_ctrl_in_t;
 		ctrl_out	: out cop0_ctrl_out_t;
-		reg_rd		: out STD_LOGIC;
 		din			: in  word_t;
 		dout		: out word_t
 	);
@@ -228,7 +225,6 @@ inst_pipeline: pipeline
 		dmem_dout	=> dmem_dout,
 		cop_ir		=> pipe_cop_ir,
 		cop_ir_en	=> pipe_cop_ir_en,
-		cop_reg_rd	=> pipe_cop_reg_rd,
 		cop_din		=> pipe_cop_din,
 		cop_dout	=> pipe_cop_dout,
 		c0_ctrl_out	=> pipe_c0_ctrl_out,
@@ -251,7 +247,6 @@ inst_cop: cop
 		ir			=> pipe_cop_ir,
 		ctrl_in		=> pipe_c0_ctrl_out,
 		ctrl_out	=> pipe_c0_ctrl_in,
-		reg_rd		=> pipe_cop_reg_rd,
 		dout		=> pipe_cop_din,
 		din			=> pipe_cop_dout
 	);