diff --git a/Framework/MDAlgorithms/src/ReplicateMD.cpp b/Framework/MDAlgorithms/src/ReplicateMD.cpp
index f97a4822c388c378ffdd2bc9e9b495baa2345632..f60b7c005638cc174503903508972036d78f8528 100644
--- a/Framework/MDAlgorithms/src/ReplicateMD.cpp
+++ b/Framework/MDAlgorithms/src/ReplicateMD.cpp
@@ -152,7 +152,7 @@ const std::string ReplicateMD::category() const { return "MDAlgorithms"; }
 
 /// Algorithm's summary for use in the GUI and help. @see Algorithm::summary
 const std::string ReplicateMD::summary() const {
-  return "This is a algorithm to create a higher dimensional dataset by "
+  return "This is an algorithm to create a higher dimensional dataset by "
          "replicating along an additional axis";
 }