diff --git a/includes/core/class-blocks.php b/includes/core/class-blocks.php
index 3bbe6048..583743fb 100644
--- a/includes/core/class-blocks.php
+++ b/includes/core/class-blocks.php
@@ -125,7 +125,7 @@ if ( ! class_exists( 'um\core\Blocks' ) ) {
 					return '';
 				}
 			}
-			$shortcode = '[ultimatemember';
+			$shortcode = '[ultimatemember is_block="1"';
 
 			if ( isset( $atts['form_id'] ) && '' !== $atts['form_id'] ) {
 				$shortcode .= ' form_id="' . $atts['form_id'] . '"';
diff --git a/includes/core/class-shortcodes.php b/includes/core/class-shortcodes.php
index 5cb06727..6492314b 100644
--- a/includes/core/class-shortcodes.php
+++ b/includes/core/class-shortcodes.php
@@ -691,6 +691,10 @@ if ( ! class_exists( 'um\core\Shortcodes' ) ) {
 				}
 			}
 
+			if ( ! is_user_logged_in() && isset( $args['is_block'] ) && 1 === (int) $args['is_block'] && 'profile' === $mode ) {
+				return;
+			}
+
 			// for profiles only
 			if ( $mode == 'profile' && um_profile_id() ) {