diff --git a/src/wait.c b/src/wait.c
index 091a93b9..98d541b2 100644
--- a/src/wait.c
+++ b/src/wait.c
@@ -51,6 +51,7 @@ user_io_cb_handler (void *data, int fd)
   uint64_t serial;
   gpgme_ctx_t ctx;
   gpg_error_t op_err;
+  struct io_select_s iosel;
 
   (void)fd;
 
@@ -58,6 +59,12 @@ user_io_cb_handler (void *data, int fd)
   serial = tag->serial;
   assert (serial);
 
+  iosel.fd = fd;
+  iosel.for_read = 0;  /* we don't care.  */
+  iosel.for_write = 0; /* we don't care.  */
+  iosel.signaled = 1;  /* we are only called when I/O is pending.  */
+  _gpgme_fdtable_set_signaled (&iosel, 1);
+
   err = _gpgme_fdtable_run_io_cbs (serial, &op_err, NULL);
   if (err || op_err)
     ;