diff --git a/src/Mod/BIM/ArchMaterial.py b/src/Mod/BIM/ArchMaterial.py
index 50ecdf39e1..8a7b0e9cfc 100644
--- a/src/Mod/BIM/ArchMaterial.py
+++ b/src/Mod/BIM/ArchMaterial.py
@@ -869,6 +869,7 @@ class _ArchMultiMaterialTaskPanel:
                 translate("Arch", "Thickness"),
             ]
         )
+        self.form.tree.setRootIsDecorated(False)  # remove 1st column's extra left margin
         self.form.tree.setModel(self.model)
         self.form.tree.setUniformRowHeights(True)
         self.form.tree.setItemDelegate(MultiMaterialDelegate())
diff --git a/src/Mod/Draft/draftutils/params.py b/src/Mod/Draft/draftutils/params.py
index 208e895915..40863b1274 100644
--- a/src/Mod/Draft/draftutils/params.py
+++ b/src/Mod/Draft/draftutils/params.py
@@ -573,8 +573,8 @@ def _get_param_dictionary():
         "ifcMergeProfiles":            ("bool",      False),
         "IfcScalingFactor":            ("float",     1.0),    # importIFClegacy.py
         "ifcSeparatePlacements":       ("bool",      False),  # importIFClegacy.py
-        "MultiMaterialColumnWidth0":   ("int",       60),
-        "MultiMaterialColumnWidth1":   ("int",       60),
+        "MultiMaterialColumnWidth0":   ("int",       120),
+        "MultiMaterialColumnWidth1":   ("int",       120),
         "PanelLength":                 ("float",     1000.0),
         "PanelThickness":              ("float",     10.0),
         "PanelWidth":                  ("float",     1000.0),