diff --git a/wp-content/themes/twentyeleven/image.php b/wp-content/themes/twentyeleven/image.php
index 74228dbdbf..7516b034c8 100644
--- a/wp-content/themes/twentyeleven/image.php
+++ b/wp-content/themes/twentyeleven/image.php
@@ -57,9 +57,10 @@ get_header(); ?>
 		if ( $attachment->ID == $post->ID )
 			break;
 	}
-	$k++;
+
 	// If there is more than 1 attachment in a gallery
 	if ( count( $attachments ) > 1 ) {
+		$k++;
 		if ( isset( $attachments[ $k ] ) )
 			// get the URL of the next image attachment
 			$next_attachment_url = get_attachment_link( $attachments[ $k ]->ID );
diff --git a/wp-content/themes/twentyten/loop-attachment.php b/wp-content/themes/twentyten/loop-attachment.php
index 3976b0d6e8..26e213eec0 100644
--- a/wp-content/themes/twentyten/loop-attachment.php
+++ b/wp-content/themes/twentyten/loop-attachment.php
@@ -71,9 +71,10 @@
 		if ( $attachment->ID == $post->ID )
 			break;
 	}
-	$k++;
+
 	// If there is more than 1 image attachment in a gallery
 	if ( count( $attachments ) > 1 ) {
+		$k++;
 		if ( isset( $attachments[ $k ] ) )
 			// get the URL of the next image attachment
 			$next_attachment_url = get_attachment_link( $attachments[ $k ]->ID );
diff --git a/wp-content/themes/twentytwelve/image.php b/wp-content/themes/twentytwelve/image.php
index 285e453c71..1dc2aa9312 100644
--- a/wp-content/themes/twentytwelve/image.php
+++ b/wp-content/themes/twentytwelve/image.php
@@ -58,9 +58,9 @@ foreach ( $attachments as $k => $attachment ) :
 		break;
 endforeach;
 
-$k++;
 // If there is more than 1 attachment in a gallery
 if ( count( $attachments ) > 1 ) :
+	$k++;
 	if ( isset( $attachments[ $k ] ) ) :
 		// get the URL of the next image attachment
 		$next_attachment_url = get_attachment_link( $attachments[ $k ]->ID );