diff -r 5fbc119e9f24 libinterp/corefcn/graphics.cc
--- a/libinterp/corefcn/graphics.cc	Mon Apr 28 19:58:36 2014 +0200
+++ b/libinterp/corefcn/graphics.cc	Mon May 05 08:29:03 2014 +0200
@@ -9463,16 +9463,17 @@
 
   int nargin = args.length ();
 
-  if (nargin != 1)
+  if (nargin == 1)
+    {
+      double h = args(0).double_value ();
+      if (! error_state)
+        retval = calc_dimensions (gh_manager::get_object (h));
+      else
+        error ("__calc_dimensions__: expecting graphics handle as only argument");
+    }
+  else
     print_usage ();
 
-  double h = args(0).double_value ();
-
-  if (! error_state)
-    retval = calc_dimensions (gh_manager::get_object (h));
-  else
-    error ("__calc_dimensions__: expecting graphics handle as only argument");
-
   return retval;
 }