diff --git a/converter/pc98_usb/Makefile b/converter/pc98_usb/Makefile
index a3cf2a29..0f284a1b 100644
--- a/converter/pc98_usb/Makefile
+++ b/converter/pc98_usb/Makefile
@@ -50,7 +50,7 @@ ARCH ?= AVR8
 F_USB ?= $(F_CPU)
 
 # Interrupt driven control endpoint task
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+#OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 
 
 # Build Options