diff --git a/src/App/PropertyStandard.cpp b/src/App/PropertyStandard.cpp
index c46f62ee4b..07452a4de1 100644
--- a/src/App/PropertyStandard.cpp
+++ b/src/App/PropertyStandard.cpp
@@ -3033,22 +3033,22 @@ const Color& PropertyMaterialList::getEmissiveColor(int index) const
     return _lValueList[index].emissiveColor;
 }
 
-double PropertyMaterialList::getShininess() const
+float PropertyMaterialList::getShininess() const
 {
     return _lValueList[0].transparency;
 }
 
-double PropertyMaterialList::getShininess(int index) const
+float PropertyMaterialList::getShininess(int index) const
 {
     return _lValueList[index].transparency;
 }
 
-double PropertyMaterialList::getTransparency() const
+float PropertyMaterialList::getTransparency() const
 {
     return _lValueList[0].transparency;
 }
 
-double PropertyMaterialList::getTransparency(int index) const
+float PropertyMaterialList::getTransparency(int index) const
 {
     return _lValueList[index].transparency;
 }
diff --git a/src/App/PropertyStandard.h b/src/App/PropertyStandard.h
index a66e482f9c..ed617cc821 100644
--- a/src/App/PropertyStandard.h
+++ b/src/App/PropertyStandard.h
@@ -1166,11 +1166,11 @@ public:
     const Color& getEmissiveColor() const;
     const Color& getEmissiveColor(int index) const;
 
-    double getShininess() const;
-    double getShininess(int index) const;
+    float getShininess() const;
+    float getShininess(int index) const;
 
-    double getTransparency() const;
-    double getTransparency(int index) const;
+    float getTransparency() const;
+    float getTransparency(int index) const;
 
     PyObject* getPyObject() override;
 
diff --git a/src/Gui/ViewProviderGeometryObject.cpp b/src/Gui/ViewProviderGeometryObject.cpp
index 82d4295e47..34170b4f49 100644
--- a/src/Gui/ViewProviderGeometryObject.cpp
+++ b/src/Gui/ViewProviderGeometryObject.cpp
@@ -149,7 +149,7 @@ void ViewProviderGeometryObject::onChanged(const App::Property* prop)
             getObject()->touch(true);
         }
         const App::Material& Mat = ShapeAppearance[0];
-        long value = (long)(100.0 * ShapeAppearance.getTransparency() + 0.5);
+        long value = (long)(100.0 * ShapeAppearance.getTransparency());
         if (value != Transparency.getValue()) {
             Transparency.setValue(value);
         }