1 files changed, 2 insertions, 0 deletions

diff --git a/src/frame.c b/src/frame.c
index ae7a15c426e..2e2c7e50cd5 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -1880,6 +1880,8 @@ frame_name_fnn_p (str, len)
     {
       char *end_ptr;
 
+      strtol (str + 1, &end_ptr, 10);
+
       if (end_ptr == str + len)
         return 1;
     }