diff --git a/src/xrt/include/xrt/xrt_space.h b/src/xrt/include/xrt/xrt_space.h
index bf657d826..81593e9de 100644
--- a/src/xrt/include/xrt/xrt_space.h
+++ b/src/xrt/include/xrt/xrt_space.h
@@ -464,10 +464,10 @@ xrt_space_overseer_get_tracking_origin_offset(struct xrt_space_overseer *xso,
  */
 static inline xrt_result_t
 xrt_space_overseer_set_tracking_origin_offset(struct xrt_space_overseer *xso,
-                                              struct xrt_tracking_origin *xt0,
+                                              struct xrt_tracking_origin *xto,
                                               const struct xrt_pose *offset)
 {
-	return xso->set_tracking_origin_offset(xso, xt0, offset);
+	return xso->set_tracking_origin_offset(xso, xto, offset);
 }
 
 /*!
diff --git a/src/xrt/include/xrt/xrt_system.h b/src/xrt/include/xrt/xrt_system.h
index c3058976a..7add7dbd0 100644
--- a/src/xrt/include/xrt/xrt_system.h
+++ b/src/xrt/include/xrt/xrt_system.h
@@ -306,8 +306,8 @@ struct xrt_system_devices
 	 * Increment the usage count of a feature.
 	 * When the feature is used for the first time, then the feature will be begun.
 	 *
-	 * @param xsysd   Pointer to self
-	 * @param feature Which feature is being counted.
+	 * @param xsysd Pointer to self
+	 * @param type  Which feature is being counted.
 	 */
 	xrt_result_t (*feature_inc)(struct xrt_system_devices *xsysd, enum xrt_device_feature_type type);
 
@@ -315,8 +315,8 @@ struct xrt_system_devices
 	 * Decrement the usage count of a feature.
 	 * When the feature is not used by the current application any more, then the feature will be ended.
 	 *
-	 * @param xsysd   Pointer to self
-	 * @param feature Which feature is being counted.
+	 * @param xsysd Pointer to self
+	 * @param type  Which feature is being counted.
 	 */
 	xrt_result_t (*feature_dec)(struct xrt_system_devices *xsysd, enum xrt_device_feature_type type);