diff --git a/4-Infrastructure/hardware/Blitter6502OISC_small.v b/4-Infrastructure/hardware/Blitter6502OISC_small.v
index da9d849a..9b16f9bb 100644
--- a/4-Infrastructure/hardware/Blitter6502OISC_small.v
+++ b/4-Infrastructure/hardware/Blitter6502OISC_small.v
@@ -233,7 +233,7 @@ module Blitter6502OISC (
     reg [9:0] uart_shift;
     reg uart_active;
 
-    localparam UART_DIV = 16'd234;  // ~115200 baud at 27MHz
+    localparam UART_DIV = 16'd233;  // 115384 baud at 27MHz (matches Lean uartBaudDivisor)
 
     always @(posedge clk or negedge rst_n) begin
         if (!rst_n) begin