diff --git a/src/App/PropertyStandard.h b/src/App/PropertyStandard.h
index 3fce6611bb91..d592935d626c 100644
--- a/src/App/PropertyStandard.h
+++ b/src/App/PropertyStandard.h
@@ -1022,7 +1022,7 @@ class AppExport PropertyColor: public Property
     /** Sets the property
      */
     void setValue(const Color& col);
-    void setValue(float r, float g, float b, float a = 0.0F);
+    void setValue(float r, float g, float b, float a = 1.0F);
     void setValue(uint32_t rgba);
 
     /** This method returns a string representation of the property