diff --git a/lib_xua/src/hid/hid_report_descriptor.c b/lib_xua/src/hid/hid_report_descriptor.c
index cc5bdd2e..399d82c7 100644
--- a/lib_xua/src/hid/hid_report_descriptor.c
+++ b/lib_xua/src/hid/hid_report_descriptor.c
@@ -99,7 +99,8 @@ static unsigned hidGetItemType( const unsigned char header );
  *
  * Parameters:
  *
- *  @param[in] id   The HID Report ID for the Usage Page
+ *  @param[in] id   The HID Report ID for the Usage Page.
+ *                  A value of zero means the application does not use Report IDs.
  *
  * @return The USB HID Usage Page code or zero if the \a id parameter is out-of-range
  */
@@ -140,8 +141,8 @@ static unsigned hidGetElementReportId( const unsigned short location )
 
 static size_t hidGetElementReportLength( const unsigned short location )
 {
-    size_t bReportId = (size_t)( location & HID_REPORT_ELEMENT_LOC_LEN_MASK ) >> HID_REPORT_ELEMENT_LOC_LEN_SHIFT;
-    return bReportId;
+    size_t bReportLen = (size_t)( location & HID_REPORT_ELEMENT_LOC_LEN_MASK ) >> HID_REPORT_ELEMENT_LOC_LEN_SHIFT;
+    return bReportLen;
 }
 
 static unsigned hidGetItemSize( const unsigned char header )
diff --git a/lib_xua/src/hid/xua_hid_report_descriptor.h b/lib_xua/src/hid/xua_hid_report_descriptor.h
index 5a67e769..c9312be2 100644
--- a/lib_xua/src/hid/xua_hid_report_descriptor.h
+++ b/lib_xua/src/hid/xua_hid_report_descriptor.h
@@ -131,7 +131,8 @@ unsigned hidGetReportIdLimit ( void );
  *
  * Parameters:
  *
- *  @param[in]  id      The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
+ *  @param[in]  id      The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2).
+ *                      A value of zero means the application does not use Report IDs.
  *  @param[in]  byte    The byte position of the control within the HID Report
  *  @param[in]  bit     The bit position of the control within the \a byte
  *  @param[out] page    The USB HID Usage Page code for the Item (see 5.5)
@@ -173,6 +174,7 @@ unsigned hidGetReportItem(
  * Parameters:
  *
  *  @param[in]  id  The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
+ *                  A value of zero means the application does not use Report IDs.
  *
  * @return The length of the Report in bytes
  */
@@ -205,6 +207,7 @@ void hidResetReportDescriptor( void );
  * Parameters:
  *
  *  @param[in]  id      The identifier for the HID Report (see 5.6, 6.2.2.7, 8.1 and 8.2)
+ *                      A value of zero means the application does not use Report IDs.
  *  @param[in] byte     The byte position of the control within the HID Report
  *  @param[in] bit      The bit position of the control within the \a byte
  *  @param[in] page     The USB HID Usage Page code for the Item (see 5.5)