diff --git a/lib/SDRAM/ddr_sdr_v1_5/src/mt48lc16m16a2.vhd b/lib/SDRAM/ddr_sdr_v1_5/src/mt48lc16m16a2.vhd
index fac375d..7ea0ccb 100644
--- a/lib/SDRAM/ddr_sdr_v1_5/src/mt48lc16m16a2.vhd
+++ b/lib/SDRAM/ddr_sdr_v1_5/src/mt48lc16m16a2.vhd
@@ -87,7 +87,7 @@ ENTITY mt48lc16m16a2 IS
     PORT (
         Dq    : INOUT STD_LOGIC_VECTOR (data_bits - 1 DOWNTO 0) := (OTHERS => 'Z');
         Addr  : IN    STD_LOGIC_VECTOR (addr_bits - 1 DOWNTO 0) := (OTHERS => '0');
-        Ba    : IN    STD_LOGIC_VECTOR := "00";
+        Ba    : IN    STD_LOGIC_VECTOR (1 DOWNTO 0) := "00";
         Clk   : IN    STD_LOGIC := '0';
         Cke   : IN    STD_LOGIC := '1';
         Cs_n  : IN    STD_LOGIC := '1';