diff --git a/CHANGES.md b/CHANGES.md
index 4d864ac47..b3b5da469 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,7 @@
 
 * SIRF/STIR (PET and SPECT)
   - use direct STIR operations for arrays, potentially resulting in speed-up when using STIR 6.2 or later.
+  - added means for setting maximal and minimal value for scale factor in stir::ScatterEstimation
 
 * CMake/building:
 - set CMP0074 policy to NEW, i.e. honour <packagename>_ROOT env variables
diff --git a/src/xSTIR/cSTIR/cstir_p.cpp b/src/xSTIR/cSTIR/cstir_p.cpp
index bb145db55..35b5cf2bb 100644
--- a/src/xSTIR/cSTIR/cstir_p.cpp
+++ b/src/xSTIR/cSTIR/cstir_p.cpp
@@ -856,25 +856,28 @@ sirf::cSTIR_setScatterEstimatorParameter
         int value = dataFromHandle<int>(hv);
         obj.set_num_iterations(value);
     }
-    
     else if (sirf::iequals(name, "set_OSEM_num_subiterations"))
     {
         int value = dataFromHandle<int>(hv);
         obj.set_OSEM_num_subiterations(value);
     }
-    
     else if (sirf::iequals(name, "set_OSEM_num_subsets"))
     {
         int value = dataFromHandle<int>(hv);
         obj.set_OSEM_num_subsets(value);
     }
-    
-    
-    
     else if (sirf::iequals(name, "set_output_prefix"))
     {
         obj.set_output_prefix(charDataFromHandle(hv));
     }
+    else if (sirf::iequals(name, "set_max_scale_value"))
+    {
+        obj.set_max_scale_value(dataFromHandle<float>(hv));
+    }
+    else if (sirf::iequals(name, "set_min_scale_value"))
+    {
+        obj.set_min_scale_value(dataFromHandle<float>(hv));
+    }
     else
         return parameterNotFound(name, __FILE__, __LINE__);
 
diff --git a/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h b/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
index 227d1d5e2..649c5fd51 100644
--- a/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
+++ b/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
@@ -947,6 +947,18 @@ The actual algorithm is described in
           return this->get_reconstruction_method().get_num_subsets();
         }
 
+        //! Set maximal scale factor value of the SSS algorithm to use
+        void set_max_scale_value(float v)
+        {
+            stir::ScatterEstimation::set_max_scale_value(v);
+        }
+
+        //! Set minimal scale factor value of the SSS algorithm to use
+        void set_min_scale_value(float v)
+        {
+            stir::ScatterEstimation::set_min_scale_value(v);
+        }
+
         std::shared_ptr<STIRAcquisitionData> get_scatter_estimate(int est_num = -1) const
         {
             if (est_num == -1) // Get the last one
diff --git a/src/xSTIR/pSTIR/STIR.py b/src/xSTIR/pSTIR/STIR.py
index 89e8ef8c5..5fddaa42d 100644
--- a/src/xSTIR/pSTIR/STIR.py
+++ b/src/xSTIR/pSTIR/STIR.py
@@ -3614,6 +3614,14 @@ def set_num_iterations(self, v):
         """Set number of iterations of the SSS algorithm to use."""
         parms.set_int_par(self.handle, 'PETScatterEstimator', 'set_num_iterations', v)
 
+    def set_max_scale_value(self, v):
+        """Set maximal scale factor value of the SSS algorithm to use."""
+        parms.set_float_par(self.handle, 'PETScatterEstimator', 'set_max_scale_value', v)
+
+    def set_min_scale_value(self, v):
+        """Set maximal scale factor value of the SSS algorithm to use."""
+        parms.set_float_par(self.handle, 'PETScatterEstimator', 'set_min_scale_value', v)
+
     def set_output_prefix(self, v):
         """
         Set prefix for filenames with scatter estimates.