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 7527b4b..75d91d2 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
@@ -102,9 +102,9 @@ architecture struct of sdram_ctrl_frontend_wb32 is
 	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 BUS_DM_WIDTH/2);
-	alias write_fifo_dm_in is write_fifo_din(PART_DM_WIDTH-1 downto 0);
+	alias write_fifo_dm_in is write_fifo_din(BUS_DM_WIDTH/2-1 downto 0);
 	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 write_fifo_dm_out is write_fifo_dout(BUS_DM_WIDTH/2-1 downto 0);
 
 	alias read_fifo_data_in is read_fifo_din(read_fifo_din'length-1 downto 0);
 	alias read_fifo_data_out is read_fifo_dout(read_fifo_dout'length-1 downto 0);