diff --git a/Drivers/st7305-module/source/st7305.cpp b/Drivers/st7305-module/source/st7305.cpp
index d1d16c0e..65a8daba 100644
--- a/Drivers/st7305-module/source/st7305.cpp
+++ b/Drivers/st7305-module/source/st7305.cpp
@@ -434,7 +434,10 @@ static error_t start(Device* device) {
             .dc_low_on_param = 0,
             .octal_mode = 0,
             .quad_mode = 0,
-            .sio_mode = 1,
+            // The panel is write-only. Match the working MicroPython SPI configuration instead
+            // of enabling ESP-IDF's bidirectional three-wire mode on MOSI; direction switching
+            // in that mode can corrupt long framebuffer writes and show up as vertical stripes.
+            .sio_mode = 0,
             .lsb_first = 0,
             .cs_high_active = 0,
         },