diff --git a/arduino/Makefile b/arduino/Makefile
index 5921ff6..7086bf2 100644
--- a/arduino/Makefile
+++ b/arduino/Makefile
@@ -34,7 +34,7 @@ upload: $(name).hex $(name).lst
 
 .PHONY: screen
 screen: upload
-	minicom -D $(SERIAL) -b 2000000
+	minicom -D $(SERIAL) -b 500000
 
 %.hex: $(dir_build)/%.elf
 	$(OBJCOPY) -O ihex -R .eeprom $< $@
diff --git a/arduino/source/main.c b/arduino/source/main.c
index 5e7e990..27ab2f5 100644
--- a/arduino/source/main.c
+++ b/arduino/source/main.c
@@ -188,7 +188,7 @@ int main(void)
     //PCMSK1 = _BV(PCINT9);
 
     // Initialize the program
-    serial_init(2000000);
+    serial_init(500000);
     pinmode(PIN_MOSFET, OUTPUT);
     writepin(PIN_MOSFET, LOW);
     cart_init();
diff --git a/client/source/main.c b/client/source/main.c
index bad04d6..c82d275 100644
--- a/client/source/main.c
+++ b/client/source/main.c
@@ -55,7 +55,7 @@ int main(int argc, char *argv[])
     puts(sp_get_port_name(port));
 
     if (sp_open(port, SP_MODE_READ_WRITE) != SP_OK ||
-            sp_set_baudrate(port, 2000000) != SP_OK ||
+            sp_set_baudrate(port, 500000) != SP_OK ||
             sp_set_flowcontrol(port, SP_FLOWCONTROL_NONE) != SP_OK) {
         serial_error("Failed to open port");
         return 1;