diff --git a/packages/block-library/src/post-date/index.php b/packages/block-library/src/post-date/index.php
index 3a856e65d79786..5c92c46aa60d49 100644
--- a/packages/block-library/src/post-date/index.php
+++ b/packages/block-library/src/post-date/index.php
@@ -84,7 +84,7 @@ function render_block_core_post_date( $attributes, $content, $block ) {
 	$time_tag = sprintf( '<time datetime="%1$s">%2$s</time>', $unformatted_date, $formatted_date );
 
 	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] && isset( $block->context['postId'] ) ) {
-		$time_tag = sprintf( '<a href="%1s">%2s</a>', esc_url( get_the_permalink( $block->context['postId'] ) ), $time_tag );
+		$time_tag = sprintf( '<a href="%1$s">%2$s</a>', esc_url( get_the_permalink( $block->context['postId'] ) ), $time_tag );
 	}
 
 	return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $time_tag );
diff --git a/packages/block-library/src/read-more/index.php b/packages/block-library/src/read-more/index.php
index 74311e9c5d7b30..bf14f8ea242e89 100644
--- a/packages/block-library/src/read-more/index.php
+++ b/packages/block-library/src/read-more/index.php
@@ -38,7 +38,7 @@ function render_block_core_read_more( $attributes, $content, $block ) {
 	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $justify_class_name ) );
 	$more_text          = ! empty( $attributes['content'] ) ? wp_kses_post( $attributes['content'] ) : __( 'Read more' );
 	return sprintf(
-		'<a %1s href="%2s" target="%3s">%4s<span class="screen-reader-text">%5s</span></a>',
+		'<a %1$s href="%2$s" target="%3$s">%4$s<span class="screen-reader-text">%5$s</span></a>',
 		$wrapper_attributes,
 		esc_url( get_the_permalink( $post_ID ) ),
 		esc_attr( $attributes['linkTarget'] ),