diff --git a/src/client/ply-boot-client.c b/src/client/ply-boot-client.c
index ca96bcd6..5f7bb54f 100644
--- a/src/client/ply-boot-client.c
+++ b/src/client/ply-boot-client.c
@@ -224,6 +224,8 @@ ply_boot_client_request_free (ply_boot_client_request_t *request)
   if (request == NULL)
     return;
   free (request->command);
+  if (request->argument != NULL)
+    free (request->argument);
   free (request);
 }