diff --git a/doc/changes/fixed/13522.md b/doc/changes/fixed/13522.md
new file mode 100644
index 00000000000..4ad545e575e
--- /dev/null
+++ b/doc/changes/fixed/13522.md
@@ -0,0 +1,2 @@
+- Fix `melange.emit` not respecting the package mask via `-p <PKG>` (#13522,
+  @anmonteiro)
diff --git a/src/dune_rules/stanzas/stanzas.ml b/src/dune_rules/stanzas/stanzas.ml
index dd80f714604..b4c48ea37f9 100644
--- a/src/dune_rules/stanzas/stanzas.ml
+++ b/src/dune_rules/stanzas/stanzas.ml
@@ -135,6 +135,7 @@ let stanza_package stanza =
      | Tests.T { package = Some package; _ } -> Some package
      | Coq_stanza.Theory.T { package = Some package; _ } -> Some package
      | Rocq_stanza.Theory.T { package = Some package; _ } -> Some package
+     | Melange_stanzas.Emit.T { package = Some package; _ } -> Some package
      | _ -> None)
     |> Option.map ~f:Package.id
   with
diff --git a/test/blackbox-tests/test-cases/melange/melange-emit-package.t b/test/blackbox-tests/test-cases/melange/melange-emit-package.t
index c4e58ecbc10..e728d85a393 100644
--- a/test/blackbox-tests/test-cases/melange/melange-emit-package.t
+++ b/test/blackbox-tests/test-cases/melange/melange-emit-package.t
@@ -79,14 +79,11 @@ we can still build my-ppx independently
 
   $ dune build -p my-ppx
 
-and fails if it can't resolve libraries to build the alias
+and fails to build any `@melange`-related stuff, because none is defined for
+the package `my-ppx`
 
   $ dune build @melange -p my-ppx
-  File "test/dune", line 6, characters 12-19:
-  6 |  (libraries mel-foo))
-                  ^^^^^^^
-  Error: Library "mel-foo" not found.
-  -> required by _build/default/test/js-out/test/test_entry.js
-  -> required by alias test/melange
+  Error: Alias "melange" specified on the command line is empty.
+  It is not defined in . or any of its descendants.
   [1]
 
diff --git a/test/blackbox-tests/test-cases/melange/melange-runtest-multiple-packages.t b/test/blackbox-tests/test-cases/melange/melange-runtest-multiple-packages.t
index b2281d51ccb..86c8cf3036d 100644
--- a/test/blackbox-tests/test-cases/melange/melange-runtest-multiple-packages.t
+++ b/test/blackbox-tests/test-cases/melange/melange-runtest-multiple-packages.t
@@ -33,9 +33,8 @@ Show interaction of `dune runtest -p ..` and `(melange.emit ..)`
 Selecting only the package a should not build b
 
   $ dune runtest -p a
-  $ ls _build/default/b/out/b
-  x.js
+  $ test -e _build/default/b/out/b/x.js
+  [1]
 
   $ dune runtest -p b
-  $ ls _build/default/b/out/b
-  x.js
+  $ test -e _build/default/b/out/b/x.js