Index: /CKEditor/trunk/_source/plugins/enterkey/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 5524)
+++ /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 5525)
@@ -112,5 +112,6 @@
 				if ( !newBlock )
 					newBlock = doc.createElement( blockTag );
-				else if ( forceMode )
+				// Force the enter block unless we're talking of a list item. 
+				else if ( forceMode && !newBlock.is( 'li' ) )
 					newBlock.renameNode( blockTag );