diff --git a/src/drawconstraint.cpp b/src/drawconstraint.cpp
index 4bbe95e..2891a03 100644
--- a/src/drawconstraint.cpp
+++ b/src/drawconstraint.cpp
@@ -55,8 +55,6 @@ std::string Constraint::Label(void) {
         result = ssprintf("%.2f°", valA);
     } else if(type == LENGTH_RATIO) {
         result = ssprintf("%.3f:1", valA);
-    } else if(type == LENGTH_DIFFERENCE) {
-        result = ssprintf("%.3f", valA);
     } else if(type == COMMENT) {
         result = comment;
     } else if(type == DIAMETER) {
diff --git a/src/mouse.cpp b/src/mouse.cpp
index 8ae1a2e..f39654c 100644
--- a/src/mouse.cpp
+++ b/src/mouse.cpp
@@ -1264,7 +1264,6 @@ void GraphicsWindow::MouseLeftDoubleClick(double mx, double my) {
 
             case Constraint::ANGLE:
             case Constraint::LENGTH_RATIO:
-            case Constraint::LENGTH_DIFFERENCE:
                 editValue = ssprintf("%.3f", c->valA);
                 editMinWidthChar = 5;
                 break;