diff --git a/tools/xenpaging/xenpaging.c b/tools/xenpaging/xenpaging.c
index 0377507e11..6157d3a4b6 100644
--- a/tools/xenpaging/xenpaging.c
+++ b/tools/xenpaging/xenpaging.c
@@ -232,6 +232,7 @@ static int xenpaging_getopts(struct xenpaging *paging, int argc, char *argv[])
             paging->vm_event.domain_id = atoi(optarg);
             break;
         case 'f':
+            free(filename);
             filename = strdup(optarg);
             break;
         case 'm':