diff --git a/lib/misc/tb_rom_wb.vhd b/lib/misc/tb_rom_wb.vhd
index 0e414f9..bf7ae5a 100644
--- a/lib/misc/tb_rom_wb.vhd
+++ b/lib/misc/tb_rom_wb.vhd
@@ -56,6 +56,7 @@ inst_rom_wb : entity work.rom_wb
 		CLK_I		=> CLK_O,
 		CYC_I		=> CYC_O,
 		STB_I		=> STB_O,
+		WE_I		=> '0',
 		ACK_O		=> ACK_I,
 		SRDY_O		=> SRDY_I,
 		MRDY_I		=> MRDY_O,