diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index c75d96978f..3d268f2644 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -7940,6 +7940,7 @@ bool SketchObject::getInternalTypeState(const Constraint * cstr, Sketcher::Inter
 
         switch(cstr->AlignmentType){
             case Undef:
+            case NumInternalAlignmentType:
                 internaltypestate = InternalType::None;
                 break;
             case EllipseMajorDiameter: