diff --git a/IPython/core/magics/execution.py b/IPython/core/magics/execution.py
index 82f6ab6..66ee259 100644
--- a/IPython/core/magics/execution.py
+++ b/IPython/core/magics/execution.py
@@ -627,7 +627,7 @@ python-profiler package from non-free.""")
                                 t_sys = t1[1] - t0[1]
                                 print "\nIPython CPU timings (estimated):"
                                 print "Total runs performed:", nruns
-                                print "  Times  : %10.2f    %10.2f" % ('Total', 'Per run')
+                                print "  Times  : %10s   %10s" % ('Total', 'Per run')
                                 print "  User   : %10.2f s, %10.2f s." % (t_usr, t_usr / nruns)
                                 print "  System : %10.2f s, %10.2f s." % (t_sys, t_sys / nruns)
                             twall1 = time.time()
diff --git a/IPython/core/tests/test_run.py b/IPython/core/tests/test_run.py
index a1cacc4..6087f54 100644
--- a/IPython/core/tests/test_run.py
+++ b/IPython/core/tests/test_run.py
@@ -330,3 +330,10 @@ tclass.py: deleting object: C-third
 
         # Check that __file__ was not leaked back into user_ns.
         nt.assert_equal(file1, file2)
+
+    def test_run_formatting(self):
+        """ Test that %run -t -N<N> does not raise a TypeError for N > 1."""
+        src = "pass"
+        self.mktmp(src)
+        _ip.magic('run -t -N 1 %s' % self.fname)
+        _ip.magic('run -t -N 10 %s' % self.fname)