diff --git a/src/my-calendar-categories.php b/src/my-calendar-categories.php
index baa505a5..53f6b456 100644
--- a/src/my-calendar-categories.php
+++ b/src/my-calendar-categories.php
@@ -315,7 +315,7 @@ function mc_update_cat( $category ) {
 	$where       = array(
 		'category_id' => $category_id,
 	);
-	$cat_name    = strip_tags( $category['category_name'] );
+	$cat_name    = wp_strip_all_tags( $category['category_name'] );
 	$term_exists = term_exists( $cat_name, 'mc-event-category' );
 	if ( ! $term_exists ) {
 		$term = wp_insert_term( $cat_name, 'mc-event-category' );
@@ -354,7 +354,7 @@ function mc_create_category( $category ) {
 		return false;
 	}
 	$formats     = array( '%s', '%s', '%s', '%d', '%d' );
-	$cat_name    = strip_tags( $category['category_name'] );
+	$cat_name    = wp_strip_all_tags( $category['category_name'] );
 	$term_exists = term_exists( $cat_name, 'mc-event-category' );
 	if ( ! $term_exists ) {
 		$term = wp_insert_term( $cat_name, 'mc-event-category' );
@@ -481,7 +481,7 @@ function mc_edit_category_form( $view = 'edit', $cat_id = false ) {
 								$color = '';
 								$icon  = '';
 							}
-							$color = strip_tags( $color );
+							$color = wp_strip_all_tags( $color );
 							if ( ! empty( $cur_cat ) && is_object( $cur_cat ) ) {
 								$cat_name = stripslashes( $cur_cat->category_name );
 							} else {
@@ -1112,7 +1112,7 @@ function mc_category_select( $data = false, $option = true, $multiple = false, $
 					$selected = ( null === $data ) ? '' : ' checked="checked"';
 				}
 			}
-			$category_name = strip_tags( stripslashes( trim( $cat->category_name ) ) );
+			$category_name = wp_strip_all_tags( stripslashes( trim( $cat->category_name ) ) );
 			$category_name = ( '' === $category_name ) ? '(' . __( 'Untitled category', 'my-calendar' ) . ')' : $category_name;
 			if ( $multiple ) {
 				$icon = '<span style="display:inline-block;max-width:1em;margin-left:6px;vertical-align:middle;">' . mc_category_icon( $cat ) . '</span>';
diff --git a/src/my-calendar-group-manager.php b/src/my-calendar-group-manager.php
index e982206d..885f8474 100644
--- a/src/my-calendar-group-manager.php
+++ b/src/my-calendar-group-manager.php
@@ -903,7 +903,7 @@ function mc_list_groups() {
 							}
 						}
 						echo wp_kses_post( $spam_label );
-						echo '<span id="event_' . esc_attr( $event->event_id ) . '">' . esc_html( strip_tags( wp_unslash( $title ) ) ) . '</span>';
+						echo '<span id="event_' . esc_attr( $event->event_id ) . '">' . esc_html( wp_strip_all_tags( wp_unslash( $title ) ) ) . '</span>';
 						if ( $can_edit && $edit_link ) {
 							echo '</a>';
 						}
diff --git a/src/my-calendar-output.php b/src/my-calendar-output.php
index f1c86f0d..7f8ac533 100644
--- a/src/my-calendar-output.php
+++ b/src/my-calendar-output.php
@@ -482,7 +482,7 @@ function mc_draw_event_header( $data, $type, $template ) {
 	$hlevel = apply_filters( 'mc_heading_level_table', $hlevel, $type, $time, $template );
 	// Set up .summary - required once per page for structured data. Should only be added in cases where heading & anchor are removed.
 	if ( 'single' === $type ) {
-		$title = ( ! is_singular( 'mc-events' ) ) ? "	<h2 class='event-title summary'>$image<div>$event_title</div></h2>\n" : '	<span class="summary screen-reader-text">' . strip_tags( $event_title ) . '</span>';
+		$title = ( ! is_singular( 'mc-events' ) ) ? "	<h2 class='event-title summary'>$image<div>$event_title</div></h2>\n" : '	<span class="summary screen-reader-text">' . wp_strip_all_tags( $event_title ) . '</span>';
 	} elseif ( 'list' !== $type || ( 'list' === $type && 'true' === mc_get_option( 'list_link_titles' ) ) ) {
 		/**
 		 * Filter event title inside event heading.
@@ -500,7 +500,7 @@ function mc_draw_event_header( $data, $type, $template ) {
 	} else {
 		$title = '';
 	}
-	$header .= ( false === stripos( $title, 'summary' ) ) ? '	<span class="summary screen-reader-text">' . strip_tags( $event_title ) . '</span>' : $title;
+	$header .= ( false === stripos( $title, 'summary' ) ) ? '	<span class="summary screen-reader-text">' . wp_strip_all_tags( $event_title ) . '</span>' : $title;
 
 	return '<header>' . $header . '</header>';
 }
@@ -1277,7 +1277,7 @@ function mc_event_filter( $title ) {
 		$template = mc_get_option( 'event_title_template', '' );
 		$template = ( '' !== $template ) ? stripslashes( $template ) : '{title} / {date}';
 
-		return esc_html( strip_tags( stripslashes( mc_draw_template( $array, $template ) ) ) );
+		return esc_html( wp_strip_all_tags( stripslashes( mc_draw_template( $array, $template ) ) ) );
 	} else {
 		return $title;
 	}
@@ -1786,7 +1786,7 @@ function my_calendar( $args ) {
 	$show_weekends = ( 'true' === $params['weekends'] ) ? true : false;
 	$id            = $params['id'];
 	$main_class    = ( '' !== $id ) ? $id : 'all';
-	$cid           = ( isset( $_GET['cid'] ) ) ? esc_attr( strip_tags( $_GET['cid'] ) ) : $main_class;
+	$cid           = ( isset( $_GET['cid'] ) ) ? esc_attr( wp_strip_all_tags( $_GET['cid'] ) ) : $main_class;
 	$lang          = ( $switched ) ? ' lang="' . esc_attr( $switched ) . '"' : '';
 	$body_classes  = array(
 		'mc-main',
@@ -2760,7 +2760,7 @@ function my_calendar_locations_list( $show = 'list', $datatype = 'id', $group =
 				}
 				foreach ( $qsa as $name => $argument ) {
 					if ( 'loc' !== $name && 'ltype' !== $name ) {
-						$output .= "\n" . '<input type="hidden" name="' . esc_attr( strip_tags( $name ) ) . '" value="' . esc_attr( strip_tags( $argument ) ) . '" />';
+						$output .= "\n" . '<input type="hidden" name="' . esc_attr( wp_strip_all_tags( $name ) ) . '" value="' . esc_attr( wp_strip_all_tags( $argument ) ) . '" />';
 					}
 				}
 			}
diff --git a/src/my-calendar-templating.php b/src/my-calendar-templating.php
index 2ca59a6c..260d518b 100644
--- a/src/my-calendar-templating.php
+++ b/src/my-calendar-templating.php
@@ -646,7 +646,7 @@ function mc_key_exists( $key ) {
  */
 function mc_create_template( $template, $post = array() ) {
 	$key         = md5( $template );
-	$description = strip_tags( $post['mc_template_key'] );
+	$description = wp_strip_all_tags( $post['mc_template_key'] );
 	update_option( "mc_template_desc_$key", $description );
 	update_option( "mc_ctemplate_$key", $template );
 
@@ -699,7 +699,7 @@ function mc_admin_template_description( $key ) {
 	}
 
 	if ( ! mc_is_core_template( $key ) ) {
-		$return = strip_tags( stripslashes( get_option( "mc_template_desc_$key" ) ) );
+		$return = wp_strip_all_tags( stripslashes( get_option( "mc_template_desc_$key" ) ) );
 	}
 
 	return wpautop( $return );