diff --git a/integration-tests/templates/comment.out b/integration-tests/templates/comment.out
new file mode 100644
index 0000000..cc32087
--- /dev/null
+++ b/integration-tests/templates/comment.out
@@ -0,0 +1 @@
+10001
diff --git a/integration-tests/templates/comment.stpl b/integration-tests/templates/comment.stpl
new file mode 100644
index 0000000..3bfb725
--- /dev/null
+++ b/integration-tests/templates/comment.stpl
@@ -0,0 +1 @@
+<%= 1 + /* 10 + %> /* 100 + */ 1000 %> + */ 10000 %>
diff --git a/integration-tests/tests/template_once.rs b/integration-tests/tests/template_once.rs
index f838ead..83a3e7a 100644
--- a/integration-tests/tests/template_once.rs
+++ b/integration-tests/tests/template_once.rs
@@ -164,6 +164,15 @@ fn test_rm_whitespace() {
     );
 }
 
+#[derive(TemplateOnce)]
+#[template(path = "comment.stpl")]
+struct Comment {}
+
+#[test]
+fn test_comment() {
+    assert_render("comment", Comment{})
+}
+
 #[cfg(unix)]
 mod unix {
     use super::*;