diff --git a/ion/src/device/shared/usb/dfu_relocated.cpp b/ion/src/device/shared/usb/dfu_relocated.cpp
index 7669a3103..72b9b61be 100644
--- a/ion/src/device/shared/usb/dfu_relocated.cpp
+++ b/ion/src/device/shared/usb/dfu_relocated.cpp
@@ -59,7 +59,7 @@ void DFU(bool exitWithKeyboard, void * data) {
 
   /* 4- Disable all interrupts
    * The interrupt service routines live in the Flash and could be overwritten
-   * by garbage during a firmware upgrade opration, so we disable them. */
+   * by garbage during a firmware upgrade operation, so we disable them. */
   Device::Timing::shutdown();
 
   /* 5- Jump to DFU bootloader code. We made sure in the linker script that the