Index: sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/shortcodes/class-developers.php
===================================================================
--- sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/shortcodes/class-developers.php	(revision 5266)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/plugin-directory/shortcodes/class-developers.php	(working copy)
@@ -36,8 +36,30 @@
 			$locales_list = implode( ', ', array_map( function( $locale ) use ( $slug ) {
 				return sprintf( '<a href="%1$s">%2$s</a>', esc_url( "{$locale->locale}.wordpress.org/plugins/{$slug}/" ), $locale->name );
 			}, $locales ) );
-			/* Translators: 1: Plugin name; 2: Number of locales; 3: List of locales; */
-			$output .= sprintf( '%1$s has been translated into these %2$d locales: %3$s.', $title, count( $locales ), $locales_list ) . ' ';
+
+			$locales_count = count( $locales );
+
+			if ( 1 === $locales_count ) {
+				$output .= sprintf(
+					/* Translators: 1: Plugin name; 2: Locale name; */
+					__( '%1$s has been translated into %2$s.' ),
+					$title,
+					$locales_list
+				) . ' ';
+			} else {
+				$output .= sprintf(
+					/* Translators: 1: Plugin name; 2: Number of locales; 3: List of locales; */
+					_n(
+						'%1$s has been translated into these %2$d locales: %3$s.',
+						'%1$s has been translated into these %2$d locales: %3$s.',
+						$locales_count
+					),
+					$title,
+					$locales_count,
+					$locales_list
+				) . ' ';
+			}
+
 			$output .= sprintf(
 				/* Translators: URL to translator view; */
 				__( 'Thank you to <a href="%s">the translators</a> for their contributions.', 'wporg-plugins' ),