diff --git a/Framework/DataHandling/inc/MantidDataHandling/ExtractPolarizationEfficiencies.h b/Framework/DataHandling/inc/MantidDataHandling/ExtractPolarizationEfficiencies.h
index 2df9be850d09d9ac9b3bfaf895e3ae71a1d5c27b..3401bfbe384b12c41de2fdabeb1dab2d6bba7ee6 100644
--- a/Framework/DataHandling/inc/MantidDataHandling/ExtractPolarizationEfficiencies.h
+++ b/Framework/DataHandling/inc/MantidDataHandling/ExtractPolarizationEfficiencies.h
@@ -1,5 +1,5 @@
-#ifndef MANTID_DATAHANDLING_EXTRACTMONITORWORKSPACE_H_
-#define MANTID_DATAHANDLING_EXTRACTMONITORWORKSPACE_H_
+#ifndef MANTID_DATAHANDLING_EXTRACTPOLARIZATIONEFFICIENCIES_H_
+#define MANTID_DATAHANDLING_EXTRACTPOLARIZATIONEFFICIENCIES_H_
 
 #include "MantidAPI/Algorithm.h"
 #include "MantidKernel/System.h"
@@ -49,4 +49,4 @@ private:
 } // namespace DataHandling
 } // namespace Mantid
 
-#endif /* MANTID_DATAHANDLING_EXTRACTMONITORWORKSPACE_H_ */
+#endif /* MANTID_DATAHANDLING_EXTRACTPOLARIZATIONEFFICIENCIES_H_ */
diff --git a/Framework/DataHandling/src/ExtractPolarizationEfficiencies.cpp b/Framework/DataHandling/src/ExtractPolarizationEfficiencies.cpp
index fcd463eefe1cbb773f1307102e89309efd851899..b7badbe04f345a63e63e49021053742fd14a9fcd 100644
--- a/Framework/DataHandling/src/ExtractPolarizationEfficiencies.cpp
+++ b/Framework/DataHandling/src/ExtractPolarizationEfficiencies.cpp
@@ -86,7 +86,7 @@ void ExtractPolarizationEfficiencies::init() {
       "polarization efficiencies.");
   declareProperty(make_unique<WorkspaceProperty<>>("OutputWorkspace", "",
                                                    Direction::Output),
-                  "The workspace with extracted eficiencies.");
+                  "The workspace with extracted efficiencies.");
   declareProperty<std::string>("CorrectionMethod", "",
                                "Correction method: Fredrikze or Wildes.",
                                Kernel::Direction::Output);
diff --git a/docs/source/algorithms/ExtractPolarizationEfficiencies-v1.rst b/docs/source/algorithms/ExtractPolarizationEfficiencies-v1.rst
index 277c3358b886f5097c7ceb4a76a0227e5bd008fb..09dc9922f3d5492dc184dda2b86f9f383d92575e 100644
--- a/docs/source/algorithms/ExtractPolarizationEfficiencies-v1.rst
+++ b/docs/source/algorithms/ExtractPolarizationEfficiencies-v1.rst
@@ -9,7 +9,7 @@
 Description
 -----------
 
-This algorithm reads polarization correction parameters from the intruments parameters file and creates an efficiency workspace ready to be used with :ref:`algm-PolarizationEfficiencyCor`. It is intended to be used as a child algorithm by the reflectometry
+This algorithm reads polarization correction parameters from the instruments parameters file and creates an efficiency workspace ready to be used with :ref:`algm-PolarizationEfficiencyCor`. It is intended to be used as a child algorithm by the reflectometry
 reduction algorithms and not to be used directly.
 
 To work with this algorithm the parameters file must contain the following parameters (all of type `string` and in the scope of the instrument):