diff --git a/includes/wc-core-functions.php b/includes/wc-core-functions.php
index d0298871e68..ccc71dcfc6a 100644
--- a/includes/wc-core-functions.php
+++ b/includes/wc-core-functions.php
@@ -976,14 +976,14 @@ function wc_get_image_size( $image_size ) {
 				$size['height'] = '';
 				$size['crop']   = 0;
 			} elseif ( 'custom' === $cropping ) {
-				$width          = max( 1, get_option( 'woocommerce_thumbnail_cropping_custom_width', '4' ) );
-				$height         = max( 1, get_option( 'woocommerce_thumbnail_cropping_custom_height', '3' ) );
+				$width          = max( 1, (float) get_option( 'woocommerce_thumbnail_cropping_custom_width', '4' ) );
+				$height         = max( 1, (float) get_option( 'woocommerce_thumbnail_cropping_custom_height', '3' ) );
 				$size['height'] = absint( NumberUtil::round( ( $size['width'] / $width ) * $height ) );
 				$size['crop']   = 1;
 			} else {
 				$cropping_split = explode( ':', $cropping );
-				$width          = max( 1, current( $cropping_split ) );
-				$height         = max( 1, end( $cropping_split ) );
+				$width          = max( 1, (float) current( $cropping_split ) );
+				$height         = max( 1, (float) end( $cropping_split ) );
 				$size['height'] = absint( NumberUtil::round( ( $size['width'] / $width ) * $height ) );
 				$size['crop']   = 1;
 			}