diff --git a/Framework/Algorithms/src/ReflectometryReductionOne.cpp b/Framework/Algorithms/src/ReflectometryReductionOne.cpp
index 94f321352c7a9941dfdd5936038f94c6fdca2171..8d54e4b4155569cb3adb50165c134eef46951e2f 100644
--- a/Framework/Algorithms/src/ReflectometryReductionOne.cpp
+++ b/Framework/Algorithms/src/ReflectometryReductionOne.cpp
@@ -628,14 +628,14 @@ void ReflectometryReductionOne::exec() {
     momentumTransferMaximum = calculateQ(IvsLam->x(0).front(), theta.get());
   if (isDefault("MomentumTransferStep")) {
     // if the DQQ is not given for this run.
-    // we will use CalculateResoltion to produce this value
+    // we will use NRCalculateSlitResolution to produce this value
     // for us.
-    IAlgorithm_sptr calcResAlg = createChildAlgorithm("CalculateResolution");
+    IAlgorithm_sptr calcResAlg = createChildAlgorithm("NRCalculateSlitResolution");
     calcResAlg->setProperty("Workspace", runWS);
     calcResAlg->setProperty("TwoTheta", theta.get());
     calcResAlg->execute();
     if (!calcResAlg->isExecuted())
-      throw std::runtime_error("CalculateResolution failed. Please manually "
+      throw std::runtime_error("NRCalculateSlitResolution failed. Please manually "
                                "enter a value for MomentumTransferStep.");
     momentumTransferStep = calcResAlg->getProperty("Resolution");
   }
diff --git a/Framework/Algorithms/src/ReflectometryReductionOneAuto2.cpp b/Framework/Algorithms/src/ReflectometryReductionOneAuto2.cpp
index 0460b06d4e87171e61604774f61cd583a1271090..46fd847645e000f9db35d38a8f86136ddbaafd45 100644
--- a/Framework/Algorithms/src/ReflectometryReductionOneAuto2.cpp
+++ b/Framework/Algorithms/src/ReflectometryReductionOneAuto2.cpp
@@ -522,13 +522,13 @@ ReflectometryReductionOneAuto2::rebinAndScale(MatrixWorkspace_sptr inputWS,
           "this algorithm.");
     }
 
-    IAlgorithm_sptr calcRes = createChildAlgorithm("CalculateResolution");
+    IAlgorithm_sptr calcRes = createChildAlgorithm("NRCalculateSlitResolution");
     calcRes->setProperty("Workspace", inputWS);
     calcRes->setProperty("TwoTheta", theta);
     calcRes->execute();
 
     if (!calcRes->isExecuted()) {
-      g_log.error("CalculateResolution failed. Workspace in Q will not be "
+      g_log.error("NRCalculateSlitResolution failed. Workspace in Q will not be "
                   "rebinned. Please provide dQ/Q.");
       return inputWS;
     }
diff --git a/docs/source/algorithms/CalculateSlits-v1.rst b/docs/source/algorithms/CalculateSlits-v1.rst
index c5c754b7f95eedfd425586ffe816e2c709215a2c..b3fbee1dc7c6f4acffd74e2c3254247db269ab20 100644
--- a/docs/source/algorithms/CalculateSlits-v1.rst
+++ b/docs/source/algorithms/CalculateSlits-v1.rst
@@ -10,7 +10,7 @@ Description
 -----------
 
 This algorithm can be used to calculate the slit dimensions to use for
-reflectometry instruments. It is effectively the inverse of :ref:`algm-CalculateResolution`.
+reflectometry instruments. It is effectively the inverse of :ref:`algm-NRCalculateSlitResolution`.
 
 CalculateSlits uses nothing but the input properties to calculate the output, specifically:
 
diff --git a/docs/source/algorithms/ReflectometryReductionOne-v1.rst b/docs/source/algorithms/ReflectometryReductionOne-v1.rst
index 6ecb0e331bdb48735d1447fc9bc7f5b65e20da98..669a375fdb601441eb2d51d1a4a3e158f7a10b15 100644
--- a/docs/source/algorithms/ReflectometryReductionOne-v1.rst
+++ b/docs/source/algorithms/ReflectometryReductionOne-v1.rst
@@ -159,7 +159,7 @@ Where :math:`\lambda_{min}` is the minimum extent of the `IvsLambda` Workspace
 and :math:`\lambda_{max}` is the maximum extent of the `IvsLambda` Workspace.
 
 If you have not provided a value for `MomentumTransferStep` then the algorithm
-will use :ref:`algm-CalculateResolution` to calculate this value for you.
+will use :ref:`algm-NRCalculateSlitResolution` to calculate this value for you.
 
 Scaling
 =======
diff --git a/docs/source/algorithms/ReflectometryReductionOneAuto-v2.rst b/docs/source/algorithms/ReflectometryReductionOneAuto-v2.rst
index bd7dd86f593db00252c9e9b24dc32910a44de41b..13842f048d0300dff541db57d98c771899c32c72 100644
--- a/docs/source/algorithms/ReflectometryReductionOneAuto-v2.rst
+++ b/docs/source/algorithms/ReflectometryReductionOneAuto-v2.rst
@@ -67,7 +67,7 @@ Note that when using a correction algorithm, monitors will not be integrated, ev
 
 Finally, properties :literal:`MomentumTransferMin`, :literal:`MomentumTransferStep` and :literal:`MomentumTransferMax` are
 used to rebin the output workspace in Q, and :literal:`ScaleFactor` is used to scale the rebinned workspace. When they
-are not provided the algorithm will attempt to determine the bin width using :ref:`algm-CalculateResolution` (note that, for
+are not provided the algorithm will attempt to determine the bin width using :ref:`algm-NRCalculateSlitResolution` (note that, for
 the latter to run successfully, a :literal:`slit` component with a :literal:`vertical gap` must be defined in the
 instrument definition file).
 
diff --git a/docs/source/diagrams/ReflectometryReductionOne_ConvertToMomentum-v1_wkflw.dot b/docs/source/diagrams/ReflectometryReductionOne_ConvertToMomentum-v1_wkflw.dot
index f6e54e7c7d8e4679b3f63c5f391996cd0b6196cc..3721a973d6986437e8ec4c50478fa2dfdacf820c 100644
--- a/docs/source/diagrams/ReflectometryReductionOne_ConvertToMomentum-v1_wkflw.dot
+++ b/docs/source/diagrams/ReflectometryReductionOne_ConvertToMomentum-v1_wkflw.dot
@@ -30,7 +30,7 @@ subgraph algorithms {
   convertToMT       [label="ConvertUnits\n(Momentum-transfer)"]
   rotateSource      [label="RotateSource"]
   rotateSourceBack  [label="RotateSource"]
-  calcResolution    [label="CalculateResolution"]
+  calcResolution    [label="NRCalculateSlitResolution"]
   rebin             [label="Rebin"]
   scale             [label="Scale"]
 }
diff --git a/docs/source/interfaces/ISIS Reflectometry.rst b/docs/source/interfaces/ISIS Reflectometry.rst
index 986f1fde33c621b63f345ae54d1fb45d53eeb74a..5073a1c373d6349548b7647519caf2eabf470287 100644
--- a/docs/source/interfaces/ISIS Reflectometry.rst	
+++ b/docs/source/interfaces/ISIS Reflectometry.rst	
@@ -308,7 +308,7 @@ Columns
 | dQ/Q                | No        | Contains the resolution used when rebinning                                     |
 |                     |           | output workspaces. If left blank, this is                                       |
 |                     |           | calculated for you using the                                                    |
-|                     |           | CalculateResolution algorithm. This value is                                    |
+|                     |           | NRCalculateSlitResolution algorithm. This value is                                    |
 |                     |           | negated so that Logarithmic binning can be                                      |
 |                     |           | applied for the IvsQ workspace.                                                 |
 |                     |           | If you desire linear binning then you                                           |