diff --git a/Testing/SystemTests/tests/analysis/ISIS_PowderPolarisTest.py b/Testing/SystemTests/tests/analysis/ISIS_PowderPolarisTest.py
index 8f5df35905dec56db43a12c5ed9242f48036953d..63bf9977e52666ab8509df58eeffeb6424ced5f8 100644
--- a/Testing/SystemTests/tests/analysis/ISIS_PowderPolarisTest.py
+++ b/Testing/SystemTests/tests/analysis/ISIS_PowderPolarisTest.py
@@ -133,7 +133,7 @@ def _gen_required_files():
     # Generate file names of form "INSTxxxxx.nxs"
     input_files = [os.path.join(input_dir, (inst_name + "000" + number + ".nxs")) for number in required_run_numbers]
     input_files.append(calibration_map_path)
-    input_files.append(os.path.join(input_dir, "ISIS_Powder-POLARIS98533_TotalScatteringInput.nxs"))
+    input_files.append(total_scattering_input_file)
     return input_files