diff --git a/README.md b/README.md
index e57595dd..e912fb7e 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ For detailed information about the configuration options for the target system,
    - Compile the new firmware image, and link it so that its entry point is at the start address of the primary partition
    - Sign the firmware using the `sign.py` tool and the private key generated for the factory image
    - Transfer the image using a secure connection, and store it to the secondary firmware slot
-   - Trigger the image swap using libwolfboot `wolfBoot_update()` function. See [wolfBoot library API](docs/API.md) for a description of the operation
+   - Trigger the image swap using libwolfboot `wolfBoot_update_trigger()` function. See [wolfBoot library API](docs/API.md) for a description of the operation
    - Reboot to let the bootloader begin the image swap
    - Confirm the success of the update using libwolfboot `wolfBoot_success()` function. See [wolfBoot library API](docs/API.md) for a description of the operation