diff --git a/noc/src/nAdapter.vhd b/noc/src/nAdapter.vhd
index c4ae569..1750759 100644
--- a/noc/src/nAdapter.vhd
+++ b/noc/src/nAdapter.vhd
@@ -75,7 +75,7 @@ architecture rtl of nAdapter is
 
 
 ------------------------------ signal declarations --------------------------------
-signal slt_index	: std_logic_vector(SLT_WIDTH-1 downto 0);
+signal slt_index	: std_logic_vector(ADDR_SLT_WIDTH-1 downto 0);
 signal sc_en		: std_logic;
 signal slt_en		: std_logic;
 
@@ -201,7 +201,7 @@ begin
 -----------------------------------------------------------------------------------------------
 -- Slot Counter
 	slt_cnt : counter
-		generic map ( WIDTH=>SLT_WIDTH )
+		generic map ( WIDTH=>ADDR_SLT_WIDTH )
 		port map ( clk=>na_clk, reset=>na_reset, enable=>sc_en, cnt=>slt_index );
 
 -- DMA Table - simple block ram
@@ -221,10 +221,10 @@ begin
 			else '0';
 -- Slot Table
 	slt_table : bram
-		generic map ( DATA=>DMA_IND_WIDTH+1, ADDR=>SLT_WIDTH )
+		generic map ( DATA=>DMA_IND_WIDTH+1, ADDR=>ADDR_SLT_WIDTH )
 		port map (clk => na_clk,
 			rd_addr => slt_index,
-			wr_addr => proc_in.MAddr(SLT_WIDTH+1 downto 2), -- byte addresses
+			wr_addr => proc_in.MAddr(ADDR_SLT_WIDTH+1 downto 2), -- byte addresses
 			wr_data => proc_in.MData(DMA_IND_WIDTH downto 0), -- LS bits
 			wr_ena => slt_en,
 			rd_data => slt_entry
diff --git a/noc/src/noc_defs.vhd b/noc/src/noc_defs.vhd
index 1e812e8..32c4a04 100644
--- a/noc/src/noc_defs.vhd
+++ b/noc/src/noc_defs.vhd
@@ -51,8 +51,8 @@ package noc_defs is
 	constant PHIT_WIDTH	: integer := 35;	-- see packet format -->32 + 3 control bits
 
 	-- scheduling
-	constant SLT_WIDTH	: integer := 3;
-	constant PRD_LENGTH	: integer := 2**SLT_WIDTH;	-- 2^6 = 64 -- 2^3 = 8
+	constant ADDR_SLT_WIDTH	: integer := 3;
+	constant PRD_LENGTH	: integer := 2**ADDR_SLT_WIDTH;	-- 2^6 = 64 -- 2^3 = 8
 
 	constant MAX_PERIOD	: integer :=128;