diff --git a/src/Mod/TechDraw/App/Preferences.cpp b/src/Mod/TechDraw/App/Preferences.cpp
index f97c9ed9e9..6c0d5d71f1 100644
--- a/src/Mod/TechDraw/App/Preferences.cpp
+++ b/src/Mod/TechDraw/App/Preferences.cpp
@@ -719,3 +719,10 @@ bool Preferences::printCenterMarks()
 {
     return getPreferenceGroup("Decorations")->GetBool("PrintCenterMarks", false);
 }
+
+
+//! true if old style transparency values should be converted to new style alpha values for color properties.
+bool Preferences::fixColorAlphaOnLoad()
+{
+    return getPreferenceGroup("General")->GetBool("FixColorAlphaOnLoad", true);
+}
diff --git a/src/Mod/TechDraw/App/Preferences.h b/src/Mod/TechDraw/App/Preferences.h
index 7fe50c9bb5..6afcc7074d 100644
--- a/src/Mod/TechDraw/App/Preferences.h
+++ b/src/Mod/TechDraw/App/Preferences.h
@@ -169,6 +169,8 @@ public:
     static bool showCenterMarks();
     static bool printCenterMarks();
 
+    static bool fixColorAlphaOnLoad();
+
 };