diff --git a/src/drawconstraint.cpp b/src/drawconstraint.cpp
index 1ceb37d..96b614e 100644
--- a/src/drawconstraint.cpp
+++ b/src/drawconstraint.cpp
@@ -52,7 +52,7 @@ double Constraint::EllipticalInterpolation(double rx, double ry, double theta) {
 std::string Constraint::Label(void) {
     std::string result;
     if(type == ANGLE) {
-        result = ssprintf("%.2f", valA);
+        result = ssprintf("%.2f°", valA);
     } else if(type == LENGTH_RATIO) {
         result = ssprintf("%.3f:1", valA);
     } else if(type == LENGTH_DIFFERENCE) {