diff --git a/src/Blockkit/Blocks/Section.php b/src/Blockkit/Blocks/Section.php
index 56c0e2f..18daf81 100644
--- a/src/Blockkit/Blocks/Section.php
+++ b/src/Blockkit/Blocks/Section.php
@@ -70,8 +70,8 @@ final class Section extends Blocks
 		if (count($collection) > self::MAX_FIELDS)
 			throw new Exception(sprintf('Can only have maximum %d fields',self::MAX_FIELDS));
 
-		if ($collection->map(function($item) { return strlen($item->text); })->max() > self::MAX_FIELDS_TEXT)
-			throw new Exception(sprintf('The maximum size of text in a field is %d',self::MAX_FIELDS_TEXT));
+		if (($x=$collection->map(function($item) { return strlen($item->text); })->max()) > self::MAX_FIELDS_TEXT)
+			throw new Exception(sprintf('The maximum size of the text in a field is %d (%d)',self::MAX_FIELDS_TEXT,$x));
 
 		$this->fields = $collection;