diff --git a/IPython/core/interactiveshell.py b/IPython/core/interactiveshell.py
index 26bf430..cd00bb4 100644
--- a/IPython/core/interactiveshell.py
+++ b/IPython/core/interactiveshell.py
@@ -32,6 +32,7 @@ from contextlib import nested
 from IPython.config.configurable import Configurable
 from IPython.core import debugger, oinspect
 from IPython.core import history as ipcorehist
+from IPython.core import page
 from IPython.core import prefilter
 from IPython.core import shadowns
 from IPython.core import ultratb
@@ -2115,6 +2116,10 @@ class InteractiveShell(Configurable, Magic):
         if self.quiet:
             return True
         return ask_yes_no(prompt,default)
+    
+    def show_usage(self):
+        """Show a usage message"""
+        page.page(IPython.core.usage.interactive_usage)
 
     #-------------------------------------------------------------------------
     # Things related to IPython exiting
diff --git a/IPython/core/prefilter.py b/IPython/core/prefilter.py
index 45ac5ad..d2e86ac 100755
--- a/IPython/core/prefilter.py
+++ b/IPython/core/prefilter.py
@@ -960,7 +960,7 @@ class HelpHandler(PrefilterHandler):
                 #print 'line:<%r>' % line  # dbg
                 self.shell.magic_pinfo(line)
             else:
-                page.page(self.shell.usage, screen_lines=self.shell.usable_screen_length)
+                self.shell.show_usage()
             return '' # Empty string is needed here!
         except:
             raise