diff --git a/lib/liquid/tags/doc.rb b/lib/liquid/tags/doc.rb
index b61d7e95..499102d7 100644
--- a/lib/liquid/tags/doc.rb
+++ b/lib/liquid/tags/doc.rb
@@ -59,7 +59,7 @@ module Liquid
     end
 
     def blank?
-      true
+      @body.empty?
     end
 
     def nodelist
diff --git a/test/unit/tags/doc_tag_unit_test.rb b/test/unit/tags/doc_tag_unit_test.rb
index 7c6ef6f3..64b950b7 100644
--- a/test/unit/tags/doc_tag_unit_test.rb
+++ b/test/unit/tags/doc_tag_unit_test.rb
@@ -174,11 +174,11 @@ class DocTagUnitTest < Minitest::Test
 
   def test_doc_tag_delimiter_handling
     assert_template_result('', <<~LIQUID.chomp)
-      {% if true %}
-        {% doc %}
-          {% docEXTRA %}wut{% enddocEXTRA %}xyz
-        {% enddoc %}
-      {% endif %}
+      {%- if true -%}
+        {%- doc -%}
+          {%- docEXTRA -%}wut{% enddocEXTRA -%}xyz
+        {%- enddoc -%}
+      {%- endif -%}
     LIQUID
 
     assert_template_result('', "{% doc %}123{% enddoc xyz %}")