diff --git a/lib/spi/sim/tb_spi_master.fdo b/lib/spi/sim/tb_spi_master.fdo
index 8652a6c..4705fc4 100644
--- a/lib/spi/sim/tb_spi_master.fdo
+++ b/lib/spi/sim/tb_spi_master.fdo
@@ -21,4 +21,4 @@ do {tb_spi_master.wdo}
 view structure
 view signals
 
-run 60 us
+run 50 us
diff --git a/lib/spi/sim/tb_spi_master.wdo b/lib/spi/sim/tb_spi_master.wdo
index 735a766..b2fe1eb 100644
--- a/lib/spi/sim/tb_spi_master.wdo
+++ b/lib/spi/sim/tb_spi_master.wdo
@@ -63,7 +63,7 @@ add wave -noupdate -format Logic /tb_spi_master/inst_spi_master/spi_rst
 add wave -noupdate -format Logic /tb_spi_master/inst_spi_master/spi_clk_div_en
 add wave -noupdate -format Literal /tb_spi_master/inst_spi_master/spi_clk_div_count
 TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {38978613 ps} 0}
+WaveRestoreCursors {{Cursor 1} {43998205 ps} 0}
 configure wave -namecolwidth 197
 configure wave -valuecolwidth 131
 configure wave -justifyvalue left
@@ -77,4 +77,4 @@ configure wave -gridperiod 1
 configure wave -griddelta 40
 configure wave -timeline 0
 update
-WaveRestoreZoom {0 ps} {63 us}
+WaveRestoreZoom {0 ps} {52500 ns}
diff --git a/lib/spi/src/spi_master.vhd b/lib/spi/src/spi_master.vhd
index c043642..5574b97 100644
--- a/lib/spi/src/spi_master.vhd
+++ b/lib/spi/src/spi_master.vhd
@@ -10,7 +10,7 @@ ENTITY spi_master IS
 	Generic
 	(
 		word_width			: natural := 32;
-		CAT_FIFO_DEPTH		: natural := 2;
+		CAT_FIFO_DEPTH		: natural := 4;
 		DATA_FIFO_DEPTH		: natural := 16
 	);
 	Port