diff --git a/Framework/Algorithms/src/SortXAxis2.cpp b/Framework/Algorithms/src/SortXAxis2.cpp
index 009ce5a0564d4eab2e27840521b1dbbbeb6c210f..1cc5844ff01c393542315180587531821ce1b3ba 100644
--- a/Framework/Algorithms/src/SortXAxis2.cpp
+++ b/Framework/Algorithms/src/SortXAxis2.cpp
@@ -206,7 +206,6 @@ void SortXAxis::copyToOutputWorkspace(
  * @param compare std::less<double> for descending and std::greater<double> for
  * ascending
  * @param inputWorkspace the unsorted input workspace
- * @param specNum the spectrum number currently being compared
  * @return true if it is sorted
  * @return false if it is not sorted
  */