diff --git a/src/Gui/PreferencePages/DlgSettingsPDF.ui b/src/Gui/PreferencePages/DlgSettingsPDF.ui
index 47b30028f4..418ab3dcae 100644
--- a/src/Gui/PreferencePages/DlgSettingsPDF.ui
+++ b/src/Gui/PreferencePages/DlgSettingsPDF.ui
@@ -96,7 +96,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefComboBox</class>
diff --git a/src/Gui/TaskView/TaskAppearance.ui b/src/Gui/TaskView/TaskAppearance.ui
index 96e561c0a6..57c5e1aae5 100644
--- a/src/Gui/TaskView/TaskAppearance.ui
+++ b/src/Gui/TaskView/TaskAppearance.ui
@@ -209,7 +209,6 @@
    </item>
   </layout>
  </widget>
- <pixmapfunction/>
  <resources/>
  <connections>
   <connection>
diff --git a/src/Mod/BIM/Resources/ui/preferences-arch.ui b/src/Mod/BIM/Resources/ui/preferences-arch.ui
index 9ec90a9f54..0e4a209308 100644
--- a/src/Mod/BIM/Resources/ui/preferences-arch.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-arch.ui
@@ -603,7 +603,6 @@ instead of the FreeCAD web workbench</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefSpinBox</class>
diff --git a/src/Mod/BIM/Resources/ui/preferences-archdefaults.ui b/src/Mod/BIM/Resources/ui/preferences-archdefaults.ui
index 0e6ff50655..3a9c276d59 100644
--- a/src/Mod/BIM/Resources/ui/preferences-archdefaults.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-archdefaults.ui
@@ -554,7 +554,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::QuantitySpinBox</class>
diff --git a/src/Mod/BIM/Resources/ui/preferences-dae.ui b/src/Mod/BIM/Resources/ui/preferences-dae.ui
index bc8b930999..cd31ece43f 100644
--- a/src/Mod/BIM/Resources/ui/preferences-dae.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-dae.ui
@@ -321,7 +321,6 @@ The gradient of the local mesh size h(x) is bound by |Δh(x)| ≤ 1/value.</stri
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefSpinBox</class>
diff --git a/src/Mod/BIM/Resources/ui/preferences-ifc-export.ui b/src/Mod/BIM/Resources/ui/preferences-ifc-export.ui
index 32b6cf9c6c..50be02aa3f 100644
--- a/src/Mod/BIM/Resources/ui/preferences-ifc-export.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-ifc-export.ui
@@ -435,7 +435,6 @@ However, at FreeCAD, we believe having a building should not be mandatory, and t
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/BIM/Resources/ui/preferences-ifc.ui b/src/Mod/BIM/Resources/ui/preferences-ifc.ui
index 484224928b..6bbbdbee18 100644
--- a/src/Mod/BIM/Resources/ui/preferences-ifc.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-ifc.ui
@@ -493,7 +493,6 @@ are placed in a 'Group' instead.
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefSpinBox</class>
diff --git a/src/Mod/BIM/Resources/ui/preferences-sh3d-import.ui b/src/Mod/BIM/Resources/ui/preferences-sh3d-import.ui
index 5a66257658..b29ae434cc 100644
--- a/src/Mod/BIM/Resources/ui/preferences-sh3d-import.ui
+++ b/src/Mod/BIM/Resources/ui/preferences-sh3d-import.ui
@@ -493,7 +493,6 @@
     </layout>
   </widget>
   <layoutdefault spacing="6" margin="11" />
-  <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
   <customwidgets>
     <customwidget>
       <class>Gui::PrefSpinBox</class>
diff --git a/src/Mod/CAM/Gui/Resources/preferences/PathJob.ui b/src/Mod/CAM/Gui/Resources/preferences/PathJob.ui
index 91cc68197f..9969a7d9db 100644
--- a/src/Mod/CAM/Gui/Resources/preferences/PathJob.ui
+++ b/src/Mod/CAM/Gui/Resources/preferences/PathJob.ui
@@ -692,7 +692,6 @@ Should multiple tools or tool shapes with the same name exist in different direc
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::InputField</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-draft.ui b/src/Mod/Draft/Resources/ui/preferences-draft.ui
index dbb91b1883..fc47c16c68 100644
--- a/src/Mod/Draft/Resources/ui/preferences-draft.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-draft.ui
@@ -449,7 +449,6 @@ accidentally and modifying the entered value.</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-draftinterface.ui b/src/Mod/Draft/Resources/ui/preferences-draftinterface.ui
index a24b7d0670..bcb96e972f 100644
--- a/src/Mod/Draft/Resources/ui/preferences-draftinterface.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-draftinterface.ui
@@ -819,7 +819,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-draftsnap.ui b/src/Mod/Draft/Resources/ui/preferences-draftsnap.ui
index 85218af592..d1a75445b7 100644
--- a/src/Mod/Draft/Resources/ui/preferences-draftsnap.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-draftsnap.ui
@@ -529,7 +529,6 @@ Major grid lines are thicker than minor grid lines.</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::QuantitySpinBox</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-drafttexts.ui b/src/Mod/Draft/Resources/ui/preferences-drafttexts.ui
index 7aa297864d..cd111f59dc 100644
--- a/src/Mod/Draft/Resources/ui/preferences-drafttexts.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-drafttexts.ui
@@ -644,7 +644,6 @@ used for linear dimensions.</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="30"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-draftvisual.ui b/src/Mod/Draft/Resources/ui/preferences-draftvisual.ui
index 2c245e81eb..324b1cc236 100644
--- a/src/Mod/Draft/Resources/ui/preferences-draftvisual.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-draftvisual.ui
@@ -199,7 +199,6 @@ pattern definitions to be added to the standard patterns</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefLineEdit</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-dwg.ui b/src/Mod/Draft/Resources/ui/preferences-dwg.ui
index 4d344f7654..732bfe69aa 100644
--- a/src/Mod/Draft/Resources/ui/preferences-dwg.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-dwg.ui
@@ -123,7 +123,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::FileChooser</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-dxf.ui b/src/Mod/Draft/Resources/ui/preferences-dxf.ui
index 55e3202f3b..ac7bd3e92b 100644
--- a/src/Mod/Draft/Resources/ui/preferences-dxf.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-dxf.ui
@@ -683,7 +683,6 @@ This might fail for post DXF R12 templates.</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefRadioButton</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-oca.ui b/src/Mod/Draft/Resources/ui/preferences-oca.ui
index 20676580d7..feed4f0aba 100644
--- a/src/Mod/Draft/Resources/ui/preferences-oca.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-oca.ui
@@ -77,7 +77,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/Draft/Resources/ui/preferences-svg.ui b/src/Mod/Draft/Resources/ui/preferences-svg.ui
index 44683fd14c..2250e3ef18 100644
--- a/src/Mod/Draft/Resources/ui/preferences-svg.ui
+++ b/src/Mod/Draft/Resources/ui/preferences-svg.ui
@@ -324,7 +324,6 @@ This value is the maximum segment length.</string>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefCheckBox</class>
diff --git a/src/Mod/Import/Resources/ui/preferences-import.ui b/src/Mod/Import/Resources/ui/preferences-import.ui
index 07ae379805..b5216f640d 100644
--- a/src/Mod/Import/Resources/ui/preferences-import.ui
+++ b/src/Mod/Import/Resources/ui/preferences-import.ui
@@ -118,7 +118,6 @@
  </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::PrefRadioButton</class>
diff --git a/src/Mod/OpenSCAD/Resources/ui/openscadprefs-base.ui b/src/Mod/OpenSCAD/Resources/ui/openscadprefs-base.ui
index 96bd29a17f..73a1d28324 100644
--- a/src/Mod/OpenSCAD/Resources/ui/openscadprefs-base.ui
+++ b/src/Mod/OpenSCAD/Resources/ui/openscadprefs-base.ui
@@ -499,7 +499,6 @@
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <customwidgets>
   <customwidget>
    <class>Gui::FileChooser</class>
diff --git a/src/Mod/Part/Gui/DlgBlock.ui b/src/Mod/Part/Gui/DlgBlock.ui
index ad63efbd0d..6ba084bc86 100644
--- a/src/Mod/Part/Gui/DlgBlock.ui
+++ b/src/Mod/Part/Gui/DlgBlock.ui
@@ -331,7 +331,6 @@
    </item>
   </layout>
  </widget>
- <pixmapfunction>qPixmapFromMimeSource</pixmapfunction>
  <tabstops>
   <tabstop>FirstLimitType</tabstop>
   <tabstop>FirstLimitLength</tabstop>