diff --git a/src/libsysprof-analyze/tests/test-list-processes.c b/src/libsysprof-analyze/tests/test-list-processes.c
index 5b4fffcf..506260de 100644
--- a/src/libsysprof-analyze/tests/test-list-processes.c
+++ b/src/libsysprof-analyze/tests/test-list-processes.c
@@ -31,13 +31,17 @@ main (int   argc,
   g_autoptr(GListModel) processes = NULL;
   g_autoptr(GError) error = NULL;
   guint n_items;
+  int pid = -1;
 
   if (argc < 2)
     {
-      g_printerr ("usage: %s CAPTURE_FILE\n", argv[0]);
+      g_printerr ("usage: %s CAPTURE_FILE [PID]\n", argv[0]);
       return 1;
     }
 
+  if (argc == 3)
+    pid = atoi (argv[2]);
+
   loader = sysprof_document_loader_new (argv[1]);
   sysprof_document_loader_set_symbolizer (loader, sysprof_no_symbolizer_get ());
 
@@ -58,6 +62,9 @@ main (int   argc,
       guint n_maps;
       guint n_mounts;
 
+      if (pid != -1 && pid != sysprof_document_frame_get_pid (SYSPROF_DOCUMENT_FRAME (process)))
+        continue;
+
       g_print ("%d: %s\n",
                sysprof_document_frame_get_pid (SYSPROF_DOCUMENT_FRAME (process)),
                sysprof_document_process_get_command_line (process));