diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 2ccb953e2f..dc66d89adf 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -295,7 +295,7 @@ function shortcode_unautop( $pee ) {
 		. '('                                // 1: The shortcode
 		.     '\\['                          // Opening bracket
 		.     "($tagregexp)"                 // 2: Shortcode name
-		.     '(?![\\w-])'                   // Word boundary
+		.     '(?![\\w-])'                   // Not followed by word character or hyphen
 		                                     // Unroll the loop: Inside the opening shortcode tag
 		.     '[^\\]\\/]*'                   // Not a closing bracket or forward slash
 		.     '(?:'
diff --git a/wp-includes/shortcodes.php b/wp-includes/shortcodes.php
index 2ed9c8af75..2dfc277450 100644
--- a/wp-includes/shortcodes.php
+++ b/wp-includes/shortcodes.php
@@ -182,7 +182,7 @@ function get_shortcode_regex() {
 		  '\\['                              // Opening bracket
 		. '(\\[?)'                           // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
 		. "($tagregexp)"                     // 2: Shortcode name
-		. '(?![\\w-])'                       // Word boundary
+		. '(?![\\w-])'                       // Not followed by word character or hyphen
 		. '('                                // 3: Unroll the loop: Inside the opening shortcode tag
 		.     '[^\\]\\/]*'                   // Not a closing bracket or forward slash
 		.     '(?:'