Index: wp-admin/plugins.php
===================================================================
--- wp-admin/plugins.php	(revision 12995)
+++ wp-admin/plugins.php	(working copy)
@@ -491,7 +491,7 @@
 				$actions[] = '<a href="' . wp_nonce_url('plugins.php?action=deactivate&amp;plugin=' . $plugin_file . '&amp;plugin_status=' . $context . '&amp;paged=' . $page, 'deactivate-plugin_' . $plugin_file) . '" title="' . __('Deactivate this plugin') . '">' . __('Deactivate') . '</a>';
 			}
 		} else {
-			if ( is_network_only_plugin( $plugin_file ) )
+			if ( is_multisite() && is_network_only_plugin( $plugin_file ) )
 				$actions[] = '<span title="' . __('This plugin can only be activated for all sites in a network') . '">' . __('Network Only') . '</span>';
 			else
 				$actions[] = '<a href="' . wp_nonce_url('plugins.php?action=activate&amp;plugin=' . $plugin_file . '&amp;plugin_status=' . $context . '&amp;paged=' . $page, 'activate-plugin_' . $plugin_file) . '" title="' . __('Activate this plugin') . '" class="edit">' . __('Activate') . '</a>';