diff --git a/tests/18_comment_block.claro b/tests/18_comment_block.claro
new file mode 100644
index 0000000..de6b15b
--- /dev/null
+++ b/tests/18_comment_block.claro
@@ -0,0 +1,6 @@
+SAY "A"
+COMMENT
+SAY "B"
+SAY "C"
+ENDCOMMENT
+SAY "D"