diff --git a/lib/SDRAM/ddr_sdr_v1_5/src/sdram_ctrl_frontend_wb32.vhd b/lib/SDRAM/ddr_sdr_v1_5/src/sdram_ctrl_frontend_wb32.vhd
index 10b3306..7527b4b 100644
--- a/lib/SDRAM/ddr_sdr_v1_5/src/sdram_ctrl_frontend_wb32.vhd
+++ b/lib/SDRAM/ddr_sdr_v1_5/src/sdram_ctrl_frontend_wb32.vhd
@@ -101,9 +101,9 @@ architecture struct of sdram_ctrl_frontend_wb32 is
 	alias tag_fifo_out is cat_fifo_dout(CAT_FIFO_WIDTH-user_cmd_t'length-1 downto CAT_FIFO_WIDTH-user_cmd_t'length-user_tag_t'length);
 	alias addr_fifo_out is cat_fifo_dout(CAT_FIFO_WIDTH-user_cmd_t'length-user_tag_t'length-1 downto 0);
 
-	alias write_fifo_data_in is write_fifo_din(write_fifo_din'length-1 downto 4);
+	alias write_fifo_data_in is write_fifo_din(write_fifo_din'length-1 downto BUS_DM_WIDTH/2);
 	alias write_fifo_dm_in is write_fifo_din(PART_DM_WIDTH-1 downto 0);
-	alias write_fifo_data_out is write_fifo_dout(write_fifo_dout'length-1 downto 4);
+	alias write_fifo_data_out is write_fifo_dout(write_fifo_dout'length-1 downto BUS_DM_WIDTH/2);
 	alias write_fifo_dm_out is write_fifo_dout(PART_DM_WIDTH-1 downto 0);
 
 	alias read_fifo_data_in is read_fifo_din(read_fifo_din'length-1 downto 0);
@@ -222,7 +222,7 @@ begin
 	u_cmd_we			<= (not cat_fifo_empty) and (not u_busy);
 	u_cmd				<= cmd_fifo_out;
 	u_addr				<= addr_fifo_out;
-	phy_in.wr_dm		<= ((PART_DM_WIDTH-1 downto 0 => '1') & write_fifo_dm_out) when phy_out.tag_wr(0) = '0' else (write_fifo_dm_out & (PART_DM_WIDTH-1 downto 0 => '1'));
+	phy_in.wr_dm		<= ((BUS_DM_WIDTH/2-1 downto 0 => '1') & write_fifo_dm_out) when phy_out.tag_wr(0) = '0' else (write_fifo_dm_out & (BUS_DM_WIDTH/2-1 downto 0 => '1'));
 	u_tag_in			<= tag_fifo_out;
 	phy_in.wr_data		<= write_fifo_data_out & write_fifo_data_out;