diff --git a/doc/developer-guides/hld/hv-cpu-virt.rst b/doc/developer-guides/hld/hv-cpu-virt.rst
index d5187fbd1..d5cf3bd62 100644
--- a/doc/developer-guides/hld/hv-cpu-virt.rst
+++ b/doc/developer-guides/hld/hv-cpu-virt.rst
@@ -1104,7 +1104,7 @@ APIs to register its IO/MMIO range:
    * - **API**
      - **Description**
 
-   * - register_io_emulation_handler
+   * - register_pio_emulation_handler
      - register an I/O emulation handler for a hypervisor emulated device
        by specific I/O range
 
diff --git a/doc/developer-guides/hld/hv-io-emulation.rst b/doc/developer-guides/hld/hv-io-emulation.rst
index 44d3385a4..fccedf42e 100644
--- a/doc/developer-guides/hld/hv-io-emulation.rst
+++ b/doc/developer-guides/hld/hv-io-emulation.rst
@@ -316,7 +316,7 @@ I/O bitmaps and register or unregister I/O handlers:
 .. doxygenfunction:: allow_guest_pio_access
    :project: Project ACRN
 
-.. doxygenfunction:: register_io_emulation_handler
+.. doxygenfunction:: register_pio_emulation_handler
    :project: Project ACRN
 
 .. doxygenfunction:: register_mmio_emulation_handler