diff --git a/docs/docs/scanner/vulnerability.md b/docs/docs/scanner/vulnerability.md
index 328d735c9709..9df2b43d8b80 100644
--- a/docs/docs/scanner/vulnerability.md
+++ b/docs/docs/scanner/vulnerability.md
@@ -304,6 +304,9 @@ By default, all relationships are included in the scan.
 !!! info
     This flag filters the packages themselves, so it also affects the `--list-all-pkgs` option and SBOM generation.
 
+!!! warning
+    As it may not provide a complete package list, `--pkg-relationships` cannot be used with `--dependency-tree`, `--vex` or SBOM generation.
+
 
 [^1]: https://github.com/GoogleContainerTools/distroless