diff --git a/configs/teensy-3.x/include/board.h b/configs/teensy-3.x/include/board.h
index 508d5a811d..0a0eae9914 100644
--- a/configs/teensy-3.x/include/board.h
+++ b/configs/teensy-3.x/include/board.h
@@ -179,6 +179,9 @@
 #define BOARD_USB_CLKSRC              SIM_SOPT2_USBSRC
 #define BOARD_USB_FREQ                BOARD_SIM_CLKDIV2_FREQ
 
+/* Allow USBOTG-FS Controller to Read from FLASH */
+
+#define BOARD_USB_FLASHACCESS
 
 /* PWM Configuration */
 /* FTM0 Channels */