diff --git a/scripts/Muon/GUI/ElementalAnalysis/LoadWidget/load_utils.py b/scripts/Muon/GUI/ElementalAnalysis/LoadWidget/load_utils.py
index 84b3fbc72b04ddd9b0f96328771f624208376b63..0e9d52c5cb3c5d79d44f6bd11fcb4f9e44987f43 100644
--- a/scripts/Muon/GUI/ElementalAnalysis/LoadWidget/load_utils.py
+++ b/scripts/Muon/GUI/ElementalAnalysis/LoadWidget/load_utils.py
@@ -97,6 +97,7 @@ def merge_workspaces(run, workspaces):
             merged_ws = create_merged_workspace(workspace_list)
             # add merged ws to ADS
             mantid.mtd.add(detector, merged_ws)
+            mantid.ConvertToHistogram(InputWorkspace=detector, OutputWorkspace=detector)
             overall_ws.add(detector)
 
     mantid.AnalysisDataService.remove("tmp")