Index: public_html/wp-content/plugins/plugin-directory/widgets/class-support.php
===================================================================
--- public_html/wp-content/plugins/plugin-directory/widgets/class-support.php	(revision 3299)
+++ public_html/wp-content/plugins/plugin-directory/widgets/class-support.php	(working copy)
@@ -49,7 +49,7 @@
 		<p>
 			<?php
 			/* translators: 1: Number of resolved threads; 2: Number of all threads; */
-			printf( __( '%1$s of %2$s support threads in the last two months have been marked resolved.', 'wporg-plugins' ), $resolved, $threads );
+			printf( _n( '%1$s of %2$s support thread in the last two months have been marked resolved.', '%1$s of %2$s support threads in the last two months have been marked resolved.', $threads, 'wporg-plugins' ), $resolved, $threads );
 			?>
 		</p>
 		<?php endif; ?>