Index: wp-content/themes/twentythirteen/footer.php
===================================================================
--- wp-content/themes/twentythirteen/footer.php	(revision 24891)
+++ wp-content/themes/twentythirteen/footer.php	(working copy)
@@ -17,7 +17,7 @@
 
 			<div class="site-info">
 				<?php do_action( 'twentythirteen_credits' ); ?>
-				<a href="<?php echo esc_url( __( 'http://wordpress.org/', 'twentythirteen' ) ); ?>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentythirteen' ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentythirteen' ), 'WordPress' ); ?></a>
+				<a href="<?php echo esc_url( __( 'http://wordpress.org/', 'twentythirteen' ) ); ?>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentythirteen' ); ?>"><?php _e( 'Proudly powered by WordPress', 'twentythirteen' ); ?></a>
 			</div><!-- .site-info -->
 		</footer><!-- #colophon -->
 	</div><!-- #page -->