diff --git a/Code/Mantid/scripts/Inelastic/IndirectReductionCommon.py b/Code/Mantid/scripts/Inelastic/IndirectReductionCommon.py
index c0a4c56d766c448122942bb84727827f1169dfd5..d2569db5318494cb3c1c31669cde5cde7d0f74c3 100644
--- a/Code/Mantid/scripts/Inelastic/IndirectReductionCommon.py
+++ b/Code/Mantid/scripts/Inelastic/IndirectReductionCommon.py
@@ -303,7 +303,8 @@ def unwrap_monitor(workspace_name):
         try:
             FFTSmooth(InputWorkspace=monitor_workspace_name,
                       OutputWorkspace=monitor_workspace_name,
-                      WorkspaceIndex=0)
+                      WorkspaceIndex=0,
+                      IgnoreXBins=True)
         except ValueError:
             raise ValueError('Uneven bin widths are not supported.')