diff --git a/src/wp-includes/class-wp-image-editor-imagick.php b/src/wp-includes/class-wp-image-editor-imagick.php
index 36a344b15b..19e168edb0 100644
--- a/src/wp-includes/class-wp-image-editor-imagick.php
+++ b/src/wp-includes/class-wp-image-editor-imagick.php
@@ -203,7 +203,10 @@ class WP_Image_Editor_Imagick extends WP_Image_Editor {
 					$this->image->setImageCompression( imagick::COMPRESSION_JPEG );
 					break;
 				case 'image/webp':
-					if ( _wp_webp_is_lossy( $this->file ) ) {
+					$webp_info = wp_get_webp_info( $this->file );
+					$type      = $webp_info['type'];
+
+					if ( $type && 'lossy' === $type ) {
 						$this->image->setImageCompressionQuality( $quality );
 					} else {
 						// Use WebP lossless settings.
diff --git a/src/wp-includes/media.php b/src/wp-includes/media.php
index 037b4dfebe..c1dc3886f7 100644
--- a/src/wp-includes/media.php
+++ b/src/wp-includes/media.php
@@ -5115,18 +5115,3 @@ function wp_get_webp_info( $filename ) {
 
 	return compact( 'width', 'height', 'type' );
 }
-
-/**
- * Determines if a passed image is a lossy WebP image.
- *
- * @since 5.8.0
- *
- * @param string $filename The file path.
- * @return bool Whether the file is a lossy WebP file.
- */
-function _wp_webp_is_lossy( $filename ) {
-	$webp_info = wp_get_webp_info( $filename );
-	$type      = $webp_info['type'];
-
-	return $type && 'lossy' === $type;
-}