diff --git a/boxes/__init__.py b/boxes/__init__.py
index b606934..cfd054d 100755
--- a/boxes/__init__.py
+++ b/boxes/__init__.py
@@ -608,6 +608,11 @@ class Boxes:
 
         """
 
+        try:
+            degrees, radius = degrees
+        except:
+            pass
+
         rad = degrees * math.pi / 180
 
         if tabs and self.tabs: